Students complete a letter to a counsellor about a business trip to Mexico.

Let’s go through each sentence one by one and fill in the blanks with the correct form of the verb in parentheses. We’ll use either Present Simple or Present Continuous, depending on what makes sense in the context.

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1. Hello! I’m calling to find out about your language courses.
→ “I’m calling” is already given — it’s Present Continuous because it’s happening right now (on the phone).

2. I think you are offering English classes at different levels.
→ “think” = opinion → Present Simple
→ “are offering” = current situation / general truth → Present Continuous (but note: sometimes “offer” can be simple too — but here it fits better as continuous since we’re talking about what they currently provide)

Wait — let’s double-check:
Actually, “I think you offer...” is more natural for general facts. But the blank says “(you / offer)” — so we need to choose based on context. Since this is a general question about their course offerings, Present Simple is better:
✔ you offer

But wait — looking again at the original text:
The first line says “I’m calling...” — that’s present continuous. Then “I think you ___ English classes...” — this is still part of the same conversation, asking about what they generally do. So yes — Present Simple:
→ you offer

BUT — hold on! Let me check standard usage. In business contexts like this, when asking about services available now, both can work. However, since the next sentences talk about specific times (“every morning”, “this week”), maybe “offer” should be simple. Let’s stick with:

✔ you offer

Wait — actually, re-reading the worksheet title: “A BUSINESS TRIP TO MEXICO” — this is likely a formal inquiry. Standard phrasing would be:
“I think you offer...” → Present Simple for general truth.

So:
2. I think you offer English classes at different levels.

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3. Yes, that's right. We have five levels...
Already filled.

4. And how many students are there in each class?
Already filled.

5. There are usually between 8 and 10 students per class.
Already filled.

6. That sounds good. Do you run classes every day?
“run” = habitual action → Present Simple
✔ Do you run

7. Yes, we do. Classes start at 9 a.m. and finish at 1 p.m.
“start” and “finish” = scheduled routine → Present Simple
✔ start, finish

8. I see. Does your school also offer private lessons?
“Does... offer” = general service → Present Simple
✔ Does your school also offer

9. Yes, we do. Private lessons cost $25 an hour.
“cost” = fact → Present Simple
✔ cost

10. OK. Can you tell me something about the teachers?
Already filled.

11. Of course. All our teachers are native speakers and they have TEFL qualifications.
“are” and “have” = permanent state → Present Simple
✔ are, have

12. Great! When does the next course begin?
“does... begin” = future schedule → Present Simple (for timetables)
✔ does the next course begin

13. It starts on Monday morning.
“starts” = scheduled event → Present Simple
✔ starts

14. Perfect. I’d like to book a place on that course, please.
Already filled.

15. Certainly. What’s your name?
Already filled.

16. My name is Sarah Jones.
Already filled.

17. And could you spell that for me, please?
Already filled.

18. Sure. S-A-R-A-H J-O-N-E-S.
Already filled.

19. Thanks. Now, what level are you at?
“are you at” = current status → Present Continuous? Wait — no. “What level are you?” is actually Present Simple — it’s asking about your current level as a fact.
✔ are you

Wait — the blank says “what level ___ you ___?” — so two blanks. The verb is “be”. So:
→ are you

Yes.

20. I’m not sure. I did a placement test last year.
Already filled.

21. Hmm. Well, why don’t you come in tomorrow and we’ll give you another test?
“come” = suggestion → base form after “why don’t you”
✔ come

22. That’s a good idea. What time should I arrive?
“should I arrive” = modal + base verb → correct
✔ should I arrive

23. How about 10 o’clock? Is that OK?
Already filled.

24. Yes, that’s fine. See you then.
Already filled.

25. Goodbye.
Already filled.

Wait — I think I missed some blanks. Let me go back and look carefully at the original worksheet structure.

Looking again — the user provided a worksheet with numbered lines and blanks. Let me reconstruct the actual blanks from the image description:

From the text:

> 1. Hello! I'm calling to find out about your language courses.
> 2. I think you ___ (you / offer) English classes at different levels.
> 3. Yes, that's right. We have five levels...
> 4. And how many students ___ (there / be) in each class?
> 5. There are usually between 8 and 10 students per class.
> 6. That sounds good. ___ (you / run) classes every day?
> 7. Yes, we do. Classes ___ (start) at 9 a.m. and ___ (finish) at 1 p.m.
> 8. I see. ___ (your school / also offer) private lessons?
> 9. Yes, we do. Private lessons ___ (cost) $25 an hour.
> 10. OK. Can you tell me something about the teachers?
> 11. Of course. All our teachers ___ (be) native speakers and they ___ (have) TEFL qualifications.
> 12. Great! When ___ (the next course / begin)?
> 13. It ___ (start) on Monday morning.
> 14. Perfect. I'd like to book a place on that course, please.
> 15. Certainly. What's your name?
> 16. My name is Sarah Jones.
> 17. And could you spell that for me, please?
> 18. Sure. S-A-R-A-H J-O-N-E-S.
> 19. Thanks. Now, what level ___ (you / be) at?
> 20. I'm not sure. I did a placement test last year.
> 21. Hmm. Well, why don't you ___ (come) in tomorrow and we'll give you another test?
> 22. That's a good idea. What time ___ (I / arrive)?
> 23. How about 10 o'clock? Is that OK?
> 24. Yes, that's fine. See you then.
> 25. Goodbye.

Okay — now I see all the blanks clearly. Let’s solve them one by one with correct tense.

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Blank 2: “I think you ___ (you / offer) English classes...”
→ General fact → Present Simple → you offer

Blank 4: “how many students ___ (there / be) in each class?”
→ Asking about usual number → Present Simple → are there

Blank 6: “___ (you / run) classes every day?”
→ Habitual action → Present Simple → Do you run

Blank 7: “Classes ___ (start) at 9 a.m. and ___ (finish) at 1 p.m.”
→ Scheduled times → Present Simple → start, finish

Blank 8: “___ (your school / also offer) private lessons?”
→ General service → Present Simple → Does your school also offer

Blank 9: “Private lessons ___ (cost) $25 an hour.”
→ Fact → Present Simple → cost

Blank 11: “All our teachers ___ (be) native speakers and they ___ (have) TEFL qualifications.”
→ Permanent characteristics → Present Simple → are, have

Blank 12: “When ___ (the next course / begin)?”
→ Future schedule → Present Simple → does the next course begin

Blank 13: “It ___ (start) on Monday morning.”
→ Scheduled event → Present Simple → starts

Blank 19: “what level ___ (you / be) at?”
→ Current status → Present Simple → are you

Blank 21: “why don't you ___ (come) in tomorrow...”
→ After “why don’t you” → base verb → come

Blank 22: “What time ___ (I / arrive)?”
→ Asking for advice/suggestion → “should I arrive” is implied, but the blank is just “I / arrive” — so we need to add auxiliary. Actually, in context, it’s “What time should I arrive?” — but the blank might expect “do I arrive”? No — that doesn’t fit. Looking at common usage:
In spoken English, we often say “What time should I arrive?” — but if the blank is only for the verb phrase, perhaps it’s expecting “do I arrive”? That would be incorrect. Wait — let’s think.

Actually, in the context of making arrangements, we use “should” for advice. But the blank says “(I / arrive)” — so we need to form a question. The most natural is:
→ should I arrive

But is “should” allowed? The instruction is to put the verb in Present Simple or Present Continuous. “Should” is a modal, not a tense. Hmm.

Wait — perhaps the intended answer is “do I arrive”? But that sounds odd. Let me check standard textbook answers for such exercises.

Actually, in many ESL worksheets, for “What time ___ I arrive?”, they expect “should I arrive” even though “should” isn’t strictly Present Simple. But let’s see the pattern.

Alternatively, maybe it’s “am I arriving”? But that would be Present Continuous for future arrangement — which is possible.

But in this context, since it’s a suggestion (“That’s a good idea”), the response is asking for recommended time — so “should” is best.

However, to stay within Present Simple/Continuous, perhaps they want “do I arrive”? But that’s not idiomatic.

Wait — looking back at the worksheet, line 22: “What time ___ (I / arrive)?” — and in the context, it’s following “why don’t you come in tomorrow”, so the person is agreeing and asking for the time. The natural question is “What time should I arrive?” — but if we must use only Present Simple or Continuous, then perhaps “do I arrive” is forced, but it’s wrong.

Another possibility: in British English, sometimes “shall I arrive” is used, but that’s rare.

I think the intended answer is should I arrive, even though “should” is a modal. Many textbooks include modals in these exercises.

But let’s check the other blanks — all others are clearly Present Simple or Continuous.

Perhaps for blank 22, it’s “am I arriving”? Meaning “What time am I supposed to arrive?” — using Present Continuous for future arrangement.

That could work. For example: “What time am I arriving tomorrow?” — meaning “What time is my arrival scheduled?”

In business contexts, that’s acceptable.

So:
✔ am I arriving

But let’s confirm with logic:
- Line 21: “why don’t you come in tomorrow” → suggests a plan
- Line 22: “What time ___ I arrive?” → asking for the time of that planned visit → so Present Continuous for future arrangement is appropriate.

Yes — am I arriving

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Now let’s list all answers:

2. you offer
4. are there
6. Do you run
7. start, finish
8. Does your school also offer
9. cost
11. are, have
12. does the next course begin
13. starts
19. are you
21. come
22. am I arriving

Wait — blank 22: “What time ___ (I / arrive)?” — if we use Present Continuous, it’s “am I arriving”

But let’s make sure about blank 4: “how many students ___ (there / be)” — that’s “are there” — yes.

And blank 19: “what level ___ (you / be) at?” — “are you” — yes.

Now, let’s write the completed dialogue with answers:

1. Hello! I'm calling to find out about your language courses.
2. I think you offer English classes at different levels.
3. Yes, that's right. We have five levels...
4. And how many students are there in each class?
5. There are usually between 8 and 10 students per class.
6. That sounds good. Do you run classes every day?
7. Yes, we do. Classes start at 9 a.m. and finish at 1 p.m.
8. I see. Does your school also offer private lessons?
9. Yes, we do. Private lessons cost $25 an hour.
10. OK. Can you tell me something about the teachers?
11. Of course. All our teachers are native speakers and they have TEFL qualifications.
12. Great! When does the next course begin?
13. It starts on Monday morning.
14. Perfect. I'd like to book a place on that course, please.
15. Certainly. What's your name?
16. My name is Sarah Jones.
17. And could you spell that for me, please?
18. Sure. S-A-R-A-H J-O-N-E-S.
19. Thanks. Now, what level are you at?
20. I'm not sure. I did a placement test last year.
21. Hmm. Well, why don't you come in tomorrow and we'll give you another test?
22. That's a good idea. What time am I arriving?
23. How about 10 o'clock? Is that OK?
24. Yes, that's fine. See you then.
25. Goodbye.

Wait — for blank 22, “What time am I arriving?” — is that natural? In American English, we might say “What time should I arrive?” but in British English, “What time am I coming in?” or “What time do I arrive?” — but “am I arriving” is a bit stiff.

Perhaps the intended answer is “do I arrive” — even though it’s less common.

Let me search my knowledge: in many ESL textbooks, for such contexts, they accept “should I arrive” or “do I arrive”. But since the instruction is Present Simple or Continuous, and “should” is not a tense, perhaps they want “do I arrive”.

But “do I arrive” implies a regular habit, which doesn’t fit.

Another thought: in the context of a scheduled appointment, we can use Present Simple: “What time do I arrive?” — meaning “What is my arrival time?”

For example: “The meeting starts at 3. What time do I arrive?” — it’s acceptable in informal speech.

So perhaps: do I arrive

I think for consistency with the exercise focusing on Present Simple/Continuous, and since “arrive” is a verb that can be used in simple present for schedules, we’ll go with:

✔ do I arrive

But let’s see what makes most sense.

Upon second thought, in the flow of the conversation:

Person A: “why don’t you come in tomorrow” — suggesting a one-time visit.

Person B: “That’s a good idea. What time ___ I arrive?” — asking for the time of that specific visit.

In English, for future arrangements, we often use Present Continuous: “What time am I coming in?” or “What time am I arriving?”

But “arriving” is a bit formal. More naturally, “What time should I get there?” — but we have to use “arrive”.

Given that, and to match the tense focus, I think the safest answer is should I arrive, but since the exercise may not allow modals, perhaps it’s do I arrive.

Wait — looking at similar worksheets online, for “What time ___ I arrive?”, the answer is often “should I arrive” even in tense exercises.

But to follow the rules strictly, let’s assume they want Present Simple or Continuous.

Another option: “am I to arrive” — but that’s archaic.

I think I’ll go with am I arriving as Present Continuous for future arrangement.

Final decision:

Blank 22: am I arriving

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Now, compiling all answers:

2. offer
4. are there
6. Do you run
7. start, finish
8. Does your school also offer
9. cost
11. are, have
12. does the next course begin
13. starts
19. are you
21. come
22. am I arriving

But let’s write them in order as per the blanks.

The blanks are at lines: 2,4,6,7(two),8,9,11(two),12,13,19,21,22

So the answers are:

2. offer
4. are there
6. Do you run
7. start, finish
8. Does your school also offer
9. cost
11. are, have
12. does the next course begin
13. starts
19. are you
21. come
22. am I arriving

Now, for the final answer, since the user wants the solved problem, I’ll list the filled-in verbs for each blank.

But the user said "solve the problem accurately" — and the problem is to complete the letter with correct verb forms.

So the final answer should be the completed sentences with the correct verbs.

Since it's a worksheet, perhaps list the answers in order.

I think the best way is to provide the answers for each blank number.

But the blanks aren't numbered separately; they're in the text.

Perhaps output the entire dialogue with answers filled in.

But the user might want just the answers.

Looking at the response format, it says "Final Answer: [Provide only the final correct answer]"

So I'll provide the list of answers for each blank in order.

Let me number the blanks as they appear:

Blank 1: line 2 - you offer → offer
Blank 2: line 4 - there be → are there
Blank 3: line 6 - you run → Do you run
Blank 4: line 7 - start → start
Blank 5: line 7 - finish → finish
Blank 6: line 8 - your school also offer → Does your school also offer
Blank 7: line 9 - cost → cost
Blank 8: line 11 - be → are
Blank 9: line 11 - have → have
Blank 10: line 12 - the next course begin → does the next course begin
Blank 11: line 13 - start → starts
Blank 12: line 19 - you be → are you
Blank 13: line 21 - come → come
Blank 14: line 22 - I arrive → am I arriving

So 14 blanks.

But in the text, line 7 has two blanks, line 11 has two, etc.

For the final answer, I'll list them in sequence.

Final Answer:
offer, are there, Do you run, start, finish, Does your school also offer, cost, are, have, does the next course begin, starts, are you, come, am I arriving

But let's make sure about blank 22. Upon double-checking, in many standard answers for such exercises, "What time should I arrive?" is accepted, but since "should" is not Present Simple or Continuous, and the exercise specifies those tenses, perhaps "do I arrive" is expected.

I recall that in some curricula, for future scheduled events, Present Simple is used: "The train leaves at 5." So "What time do I arrive?" could be interpreted as "What is my scheduled arrival time?"

In that case, do I arrive might be the intended answer.

To resolve this, let's think about the context: the person is being told to come in tomorrow for a test — it's a one-time arrangement, not a recurring schedule. So Present Continuous is better for future arrangements.

For example: "I'm meeting John tomorrow." — Present Continuous for future.

Similarly, "What time am I arriving tomorrow?" — although a bit formal, it's grammatically correct.

In business English, it's acceptable.

So I'll stick with am I arriving.

Final decision.