# Must, Might and Can't for Guessing Exercises with Answers

https://hienglishquiz.com/grammar/must-might-and-cant-for-guessing-b1

- Title: Must, Might and Can't for Guessing
- CEFR: B1 (Intermediate)
- Category: Modal Verbs and Related Expressions
- Questions: 14

Must be, might be or can't be? Practise guessing how sure you are, with must, might, may, could and can't. Answers and short explanations included.

Practise guessing how sure you are from what you can see or know: must when you are almost sure, can't when you are sure it is not true, might, may and could…

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## Lessons on this topic

- [Must, Might and Can't: How Sure Are You?](https://hienglishquiz.com/grammar-lessons/must-might-cant-deduction)

## Sample questions with answers

1. You've been travelling all day. You ____ be hungry.
   - A. must
   - B. can't
   - C. mustn't
   - D. can
   Answer: A — Travelling all day: almost sure. Use must.

2. I'm not sure where Lan is. She ____ be at the gym.
   - A. might
   - B. must
   - C. can't
   - D. mustn't
   Answer: A — The speaker is not sure. Use might.

3. That ____ be the right address. There's no house here.
   - A. can't
   - B. mustn't
   - C. might
   - D. must
   Answer: A — No house, so almost sure it is wrong: can't.

## More Modal Verbs and Related Expressions exercises

- [Requests, Offers and Suggestions · B1](https://hienglishquiz.com/grammar/asking-offering-and-suggesting-b1) — markdown: https://hienglishquiz.com/grammar/asking-offering-and-suggesting-b1.md
- [Used To · B1](https://hienglishquiz.com/grammar/used-to-b1) — markdown: https://hienglishquiz.com/grammar/used-to-b1.md
- [Deduction and Certainty · B2](https://hienglishquiz.com/grammar/deduction-and-certainty-b2) — markdown: https://hienglishquiz.com/grammar/deduction-and-certainty-b2.md
- [Possibility and Probability · C1](https://hienglishquiz.com/grammar/possibility-and-probability-c1) — markdown: https://hienglishquiz.com/grammar/possibility-and-probability-c1.md
- [Requests, Offers and Suggestions · C2](https://hienglishquiz.com/grammar/requests-offers-and-suggestions-c2) — markdown: https://hienglishquiz.com/grammar/requests-offers-and-suggestions-c2.md
- [Ability and Permission · A1](https://hienglishquiz.com/grammar/ability-and-permission-a1) — markdown: https://hienglishquiz.com/grammar/ability-and-permission-a1.md
- [Could and Couldn't · A2](https://hienglishquiz.com/grammar/could-and-couldnt-a2) — markdown: https://hienglishquiz.com/grammar/could-and-couldnt-a2.md
- [Obligation and Necessity · A2](https://hienglishquiz.com/grammar/obligation-and-necessity-a2) — markdown: https://hienglishquiz.com/grammar/obligation-and-necessity-a2.md

## Related

- All Modal Verbs and Related Expressions exercises: https://hienglishquiz.com/grammar#modal-verbs
- Grammar library: https://hienglishquiz.com/grammar
- Section guide: https://hienglishquiz.com/grammar/llms.txt