Grammar Exercise with answers | Modal Verbs

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Exercise 

Use ‘must + infinitive’ (to talk about the present tense) or ‘must + have + past participle’ (to talk about the past):

1 – She must —behave been beautiful when she was young.

2 – There’s no heating on. You must —behave been freezing.

3 – I think Paul must —drinkhave drunk all the milk. There’s none left.

4 – The ice cream here is delicious. You must —tryhave tried some.

5 – I called you yesterday around four o’clock but you must —behave been out.

6 – I can’t remember what I did with it. I must —behave been  getting old.

7 – You must —quithave quit smoking, it’s bad for you.

8 – She speaks excellent French. She must —livehave lived in France for a long time.

9 – Look at all of that snow. It must —behave been really cold outside.

10 – She must —behave been at home – her car was there.

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ANSWERS

1. She must have been beautiful when she was young.
2. There’s no heating on. You must be freezing.
3. I think Paul must have drunk all the milk. There’s none left.
4. The ice cream here is delicious. You must try some.
5. I called you yesterday around four o’clock but you must have been out.
6. I can’t remember what I did with it. I must be getting old.
7. You must quit smoking, it’s bad for you.
8. She speaks excellent French. She must have lived in France for a long time.
9. Look at all of that snow. It must be really cold outside.
10. She must have been at home – her car was there.

 

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