题目内容

   I do believe that ______ swim across the river, but, in that situation, I ____ do that.
A．am able; couldn’tB．could; was able to
C．was quite able to; couldn’tD．couldn’t was able to
C
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I have been looking for Michael for a whole day. Where ______ he have gone?
A．shouldB．canC．mustD．may
——Alice looks sad. Did you tell her about the accident?
——Yes, but I    ______ her just before her final examinations.
A．should have toldB．shouldn’t have toldC．needn’t have toldD．must have told
In the last decade, disasters have become increasingly common. It’s high time that we ______these issues more seriously.
A．tookB．have takenC．had takenD．are taking

--- Where is Jack?
--- He _________ football on the playground with those AFS students, but I am not sure.
A．must be playingB．must have played
C．may be playingD．may have played
---How exciting ! I drove my new car at a speed of 110km/h on Sunday morning.
　 ---Were you crazy ? You ______ yourself !
A．muxt have killed 　　　　　　B．would have killed
C．should have killedD．could have killed
 Thank you very much. Without your help, I _______the exams.
A．could not passB．could not have passed
C．did not pass D．could not passed
.—Jim!Did you have a good time at the party?
—Yes,but I really _________ have because I had a lot of work to do.
A．needn’tB．mustn’t?C．shouldn’tD．couldn’t

You look so tired. You______have stayed up late again.
A．shouldB．canC．mayD．must

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