This Grade 5 English worksheet helps students practice using auxiliary verbs like 'is', 'was', and 'have' in various sentence structures.

Problem: Choose the correct Auxiliary Verbs from the list: is, am, are, was, were, has, had, have

Solution:

Let's go through each sentence and choose the appropriate auxiliary verb based on the context and tense.

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#### a. What ______ you doing at 10 am tomorrow?
- Context: Future continuous tense (will be doing something in the future).
- Correct Answer: are
- Completed Sentence: What are you doing at 10 am tomorrow?

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#### b. Anne ______ not going to school today.
- Context: Present continuous tense (not currently going to school).
- Correct Answer: is
- Completed Sentence: Anne is not going to school today.

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#### c. I ______ working for 5 years.
- Context: Present perfect continuous tense (ongoing action starting in the past and continuing to the present).
- Correct Answer: have been
- Completed Sentence: I have been working for 5 years.

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#### d. How many friends ______ coming with you to the picnic?
- Context: Present continuous tense (friends are planning to come).
- Correct Answer: are
- Completed Sentence: How many friends are coming with you to the picnic?

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#### e. She ______ in her school now.
- Context: Present simple tense (current state or habitual action).
- Correct Answer: is
- Completed Sentence: She is in her school now.

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#### f. When you called me, I ______ doing my homework.
- Context: Past continuous tense (action happening at the time of another past event).
- Correct Answer: was
- Completed Sentence: When you called me, I was doing my homework.

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#### g. Wong ______ a very intelligent boy.
- Context: Present simple tense (description of a characteristic).
- Correct Answer: is
- Completed Sentence: Wong is a very intelligent boy.

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#### h. We ______ dancing when the power went out.
- Context: Past continuous tense (action happening at the time of another past event).
- Correct Answer: were
- Completed Sentence: We were dancing when the power went out.

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#### i. Anne ______ my best friend in school.
- Context: Present simple tense (description of a relationship).
- Correct Answer: is
- Completed Sentence: Anne is my best friend in school.

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#### j. The weather ______ very foggy today.
- Context: Present simple tense (description of current weather).
- Correct Answer: is
- Completed Sentence: The weather is very foggy today.

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#### k. Last night at 9 pm, we ______ about to go to bed.
- Context: Past continuous tense (planning to do something in the past).
- Correct Answer: were
- Completed Sentence: Last night at 9 pm, we were about to go to bed.

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#### l. You can go out now. It ______ raining earlier.
- Context: Past continuous tense (rain was happening earlier).
- Correct Answer: was
- Completed Sentence: You can go out now. It was raining earlier.

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#### m. You ______ supposed to come to my house at 5 pm.
- Context: Present simple tense (expected action).
- Correct Answer: are
- Completed Sentence: You are supposed to come to my house at 5 pm.

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#### n. I ______ sleeping the entire day.
- Context: Present perfect continuous tense (ongoing action starting in the past and continuing to the present).
- Correct Answer: have been
- Completed Sentence: I have been sleeping the entire day.

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#### o. I ______ sleeping when John came home to play.
- Context: Past continuous tense (action happening at the time of another past event).
- Correct Answer: was
- Completed Sentence: I was sleeping when John came home to play.

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#### p. They ______ playing the whole of yesterday.
- Context: Past continuous tense (ongoing action in the past).
- Correct Answer: were
- Completed Sentence: They were playing the whole of yesterday.

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#### q. ______ he your classmate?
- Context: Present simple tense (asking about a current relationship).
- Correct Answer: Is
- Completed Sentence: Is he your classmate?

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#### r. The children ______ playing in the park with a soft ball.
- Context: Present continuous tense (children are currently playing).
- Correct Answer: are
- Completed Sentence: The children are playing in the park with a soft ball.

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#### s. It ______ raining yesterday.
- Context: Past continuous tense (rain was happening in the past).
- Correct Answer: was
- Completed Sentence: It was raining yesterday.

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#### t. They ______ not finding their car keys.
- Context: Present continuous tense (currently unable to find car keys).
- Correct Answer: are
- Completed Sentence: They are not finding their car keys.

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#### u. ______ your mother going to help us?
- Context: Future simple tense (planning to help in the future).
- Correct Answer: Is
- Completed Sentence: Is your mother going to help us?

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Final Answers:

1. are
2. is
3. have been
4. are
5. is
6. was
7. is
8. were
9. is
10. is
11. were
12. was
13. are
14. have been
15. was
16. were
17. Is
18. are
19. was
20. are
21. Is

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Explanation:

- is/am/are: Used for present simple and present continuous tenses.
- was/were: Used for past simple and past continuous tenses.
- has/have/had: Used for present perfect, present perfect continuous, and past perfect tenses.

Each choice is determined by analyzing the tense and context of the sentence.

Final Answer:
\boxed{
\text{are, is, have been, are, is, was, is, were, is, is, were, was, are, have been, was, were, Is, are, was, are, Is}
}