1) I forgot to take an umbrella. I am totally washed. a) You could have taken an umbrella. b) You should have taken an umbrella. c) You must have taken an umbrella. 2) I lost my mobile phone. a) You should have been more careful. b) You could have been more careful. c) You must have been more careful. 3) They didn't play well so they had to go out of the stadium. a) They could have played well but they didn't. b) They would have played well but they didn't. c)  They should have played well but they didn't. 4) I forgot to water the plants. Some of them have died. a) You should have watered the plants. b) You must have watered the plants. c)  You could have watered the plants. 5) I got hurt yesterday.I slipped at the mall. a) You could have walked carefully. b) You should have walked carefully. c) You would have walked carefully. 6) We __________ take the wrong road because I don't remember this. a) should have b) may have / might have c) could have 7) John didn't study well and failed his exam. a) He should have studied more. b) He could have studied more. c)  He must have studied more. 8) We __________ take the wrong road because I don't remember this. a) should have b) may have / might have c) could have 9) 1. Why is Lisa so tired today? a) A. She may have gone to bed late. b) B. She must have gone to bed late. c) C. She could have gone to bed late. 10) 3. Why didn't Mark bring an umbrella? a) A. He may have forgotten it. b) B. He must have forgotten it. c) D. He should have forgotten it. 11) Why is the ground wet? a) A. It may have rained last night. b) B. It must have rained last night. c) C. It should have rained last night.

Modals (Must have / Could have / Would have / Should have)

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