# Deduction and Certainty Exercises with Answers

https://hienglishquiz.com/grammar/deduction-and-certainty-b2

- Title: Deduction and Certainty
- CEFR: B2 (Upper-intermediate)
- Category: Modal Verbs and Related Expressions
- Questions: 20

How sure the speaker is, from must be to might be to can't be, and how the same modal shifts meaning between the present and the past.

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## Lessons on this topic

- [Must and Have To](https://hienglishquiz.com/grammar-lessons/must-have-to)

## More Modal Verbs and Related Expressions exercises

- [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
- [Should and Shouldn't · A2](https://hienglishquiz.com/grammar/should-and-shouldnt-a2) — markdown: https://hienglishquiz.com/grammar/should-and-shouldnt-a2.md
- [Be Able To · B1](https://hienglishquiz.com/grammar/be-able-to-b1) — markdown: https://hienglishquiz.com/grammar/be-able-to-b1.md
- [Modal Perfect Forms · B1](https://hienglishquiz.com/grammar/modal-perfect-forms-b1) — markdown: https://hienglishquiz.com/grammar/modal-perfect-forms-b1.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