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24 Complete the sentences using must, have to, may, might, could or can’t, as in the example.

1 Perhaps Tom will work late tonight. Tom may/might work late tonight.

2 It's possible that Mary is trying to call us.

Mary .....................................................................

3 The students are obliged to finish the test in one hour. The students ........................................................

4 It's possible that Mum is working in the garden. Mum .....................................................................

5 I'm sure Rachel is hungry.

Rachel ..................................................................

6 Perhaps Dad will take us out to dinner.

Dad .......................................................................

7 I'm sure Lucy hasn't reached the station yet.

Lucy ......................................................................

8 It is necessary for Grandma to take her medication every morning.

Grandma ..............................................................

9 It's likely that they have gone to the supermarket.

They .....................................................................

10 I'm certain Bob didn't leave the party early. Bob .......................................................................

25 Fill in the gaps with must, mustn't or needn’t/don’t have to, as in the example.

1 A: You ...needn't/don't have to... do the washing-up. I'll do it. B: Thanks, Mum.

2 A: Paul ..................................... go to the dentist more often. B: I know. His teeth are in terrible condition.

3 A: If we want to see the beginning of the film, we ....................... leave now.

B: Alright. I'm ready.

4 A: You ....................................... speak with your mouth full.

B: I know. It's very rude.

5 A: Shall I mow the lawn?

B: No, you .................................. . I did it earlier.

6 A: ....................................... I walk the dog now?

B: Yes, it'll be dark in half an hour.

7 A: John and I are going to the theatre on Friday night.

B: You .......................... get a baby- sitter. I'll take care of the children for you.

8 A: You ................................................... forget to post those letters. B: I'll post them on my way to work.

26 Fill in the gaps with needn't have or didn't have to and the correct form of the verb in brackets, as in the example.

1 I had been to the restaurant many times before so I ...didn't have to use... (use) a map to find my way there.

2 You ……................... (come) here to tell me. You could have called me instead.

3 We didn't go abroad for our holidays last year so we……….(take) our passports with us.

4 I cooked dinner last night, so we ........................ (order) a takeaway.

5 You .............. (wash) your suit. I would have taken it to the dry-cleaner's for you.

6 I .......... (buy) anything from the supermarket so I went straight home after work.

7 My brother told me he was taking two sleeping bags so I….......... (pack) one for myself.

8 You .......... (call) from a phone box. You could have used my mobile phone instead.

9 I ........................ (send) Tom's birthday card because I knew I was going to see him on his birthday.

10 You ......................................... (book) the tickets yourself. My secretary would have done it for you.

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