Fill in the blanks with May, Might, or Must in this English grammar worksheet.

Let’s go through each sentence one by one. We need to pick the right word: May, Might, or Must.

Remember:
- Must = something is certain, required, or very likely.
- May = possible, but not sure (a bit more likely than “might”).
- Might = less certain, just a possibility.

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1. She knows she ______ be there.
→ If she *knows*, it’s certain → must

2. You ______ leave if you wish.
→ It’s optional, allowed → may (or “might”, but “may” is better for permission)

3. We ______ finish it on time.
→ Not sure, maybe we will → might (less confident) or may — both okay, but let’s use might since no strong hint of likelihood

Wait — actually, looking at context, if it’s uncertain, “might” fits. But sometimes “may” is used too. Let’s check others first.

4. There ______ be rain today.
→ Picture shows clouds and raindrops → suggests possibility → might or may — again, both work. Since it’s weather, often “might” is used for uncertainty.

But let’s think: in everyday speech, “There might be rain” is common.

5. They ______ be really rich to live in such a house.
→ This is logical deduction → they MUST be rich → must

6. She ______ be at home this time.
→ Guessing where she is → not certain → might or may — let’s say might

7. ______ God give you long life!
→ This is a blessing/wish → traditional phrase uses May → May

8. You ______ pay your taxes.
→ Required by law → must

9. ______ we play tennis, Mummy?
→ Asking for permission → May (polite request)

10. We ______ fail, but let’s not think about it.
→ Possibility of failing → might (shows worry/uncertainty)

11. We agreed that it ______ be dangerous.
→ They decided it was dangerous → so it’s certain in their view → must

12. He ______ not use the car.
→ Forbidden or not allowed → must not (prohibition)

Now let’s double-check tricky ones:

Sentence 3: “We ______ finish it on time.”
If it’s hopeful but unsure → might
If it’s possible → may
Since no extra info, either works. But in many textbooks, “might” is used for lower probability. Let’s go with might.

Sentence 4: “There ______ be rain today.”
Again, picture implies chance → might

Sentence 6: “She ______ be at home this time.”
Guessing → might

Okay, final choices:

1. must
2. may
3. might
4. might
5. must
6. might
7. May
8. must
9. May
10. might
11. must
12. must

Wait — sentence 12: “He ______ not use the car.”
This could also be “may not” (not allowed), but “must not” is stronger prohibition. In school exercises, “must not” is often used for rules. So yes, must.

Also, sentence 2: “You ______ leave if you wish.”
“May” is correct for permission. “Might” would sound odd here.

Sentence 9: “______ we play tennis, Mummy?” → Definitely May for polite request.

All set.

Final Answer:
1. must
2. may
3. might
4. might
5. must
6. might
7. May
8. must
9. May
10. might
11. must
12. must