You've been travelling all day. You ____ be hungry.
- A. must(correct answer)
- B. can't
- C. mustn't
- D. can
Why: Travelling all day: almost sure. Use must.
B114 questions · Intermediate · Modal Verbs and Related Expressions
Must, Might and Can't for Guessing Exercises with Answers
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.
14 questions
Sample questions with answers
I'm not sure where Lan is. She ____ be at the gym.
- A. might(correct answer)
- B. must
- C. can't
- D. mustn't
Why: The speaker is not sure. Use might.
That ____ be the right address. There's no house here.
- A. can't(correct answer)
- B. mustn't
- C. might
- D. must
Why: No house, so almost sure it is wrong: can't.
Lessons on this topic
- Must, Might and Can't: How Sure Are You?
Use must when you are almost sure, might, may or could when you are not sure, and can't when you are almost sure something is not true.
