Read a situation and write a sentence with " must have or couldn't have + V_3/ed " . Use the words in brackets
Vd : That dress you bought is very good quality. (It must / be / very expensive )
-> It must have been very expensive
1) I haven't seen Jim for ages ( He must / go away )
2) I wonder where my umbrella is ( You must / leave it on the rain )
3) Don passed the examination. He didn't study very much on it ( The exam couldn't / be / very difficult )
4) She knew everything about our plans ( She must / listen / to our conversation )
5) Dennis did the opposite of what I asked him to do ( He couldn't / understand / what I said )
6) When I woke up this morning, the light was on ( I must / forget / turn it off )
7) I don't understand how the accident happened ( The drive couldn't / see / the red light )
8) The phone rang but I didn't hear it ( I must / be / asleep )
9) She passed me in the street without speaking ( She couldn't / see / me )
1) He must have gone away.
2You must have left it on the train.
3) The exam couldn’t have been very difficult.
4) She must have listened to our conversation.
5) He couldn’t have understood what I said.
6) I must have forgotten to turn it off.
7) The driver couldn’t have seen the red light.
8) I must have been asleep.
9) She couldn’t have seen me.