Exercise 1
Put in must or can't.
1) You've been travelling all day. You ________ be tired.
2) That restaurant ________ be very good. It's always full of people.
3) That restaurant ________ be very good. It's always empty.
4) I'm sure I gave you the key. You ________ have it. Have you looked in your bag?
5) I often see that woman walking along this street. She ________ live near here.
6) It rained every day during their holiday, so they ________ have had a very nice time.
7) Congratulations on passing your exam. You ________ be very pleased.
8) You got here very quickly. You ________ have walked very fast.
9) Bill and Sue always stay at luxury hotels, so they ________ be short of money.
Show answers
1)
1 must
2 must 6 can't
3 can't 7 must
4 must 8 must
5 must 9 can't
Exercise 2
Complete each sentence with a verb (one or two words).
1) I've lost one of gloves. I must ________ it somewhere.
2) Their house is very near the motorway. It must ________ very noisy.
3) Sarah knows a lot about films. She must ________ to the cinema a lot.
4) I left bike outside the house last night and now it's gone. Somebody must________ it.
5) 'How old is Ted?' 'He's older than me. He must ________ at least 40.'
6) I didn't hear the phone ring. I must ________ asleep.
7) A: You're going on holiday soon. You must ________ forward to it.
B: Yes, it will be really good to get away.
8) The police have dosed the road, so we have to go a different way. There must ________ an accident.
9) I'm sure you know this song. You must ________ it before.
10) There is a man walking behind us. He has been walking behind us for the last 20 minutes. He must ________ us.
Show answers
2)
1 have dropped
2 be
3 go
4 have taken / have stolen / have moved
5 be
6 have been
7 be looking
8 have been
9 have heard
10 be following
Exercise 3
Read the situations and use the words in brackets to write sentences with must have and can't have .
1) We went to their house and rang the doorbell, but nobody answered. (they / go out)
_____________
2) Sarah hasn't contacted me. (she / get / message)
_____________
3) The jacket you bought is very good quality. (it / very expensive)
_____________
4) I haven't seen our neighbours for ages. (they / go away)
_____________
5) I can't find umbrella. (I / leave / it in the restaurant last night)
_____________
6) A was in a very difficult situation when she lost her job. (it / easy for her)
_____________
7) There was a man standing outside the cafe. (he / wait / for somebody)
_____________
8) Rachel did the opposite of what I asked her to do. (she / understand / what / said)
_____________
9) When I got back to car, the door was unlocked. (I / forget / to lock it)
_____________
10) I was woken up in the night by the noise next door. ( neighbours / have / a party)
_____________
11) The tight was red, but the car didn't stop. (the driver / see / the red tight)
_____________
Show answers
3)
1 They must have gone out.
2 She can’t have got message.
3 It must have been very expensive.
4 They must have gone away.
5 I must have left it in the restaurant last night.
6 It can't have been easy for her.
7 He must have been waiting for somebody.
8 She can't have understood what I said. or She couldn't have understood what I said.
9 I must have forgotten to lock it.
10 neighbours must have been having a party.
11 The driver can't have seen the red light. or The driver couldn't have seen …