1 . 那么吵，他不可能睡得着觉。(can’t have done...)(汉译英)
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2 . You________________   (不可能硬拉吉米离开纽约); he thought it was the only place on earth.( couldn’t have done sth “不可能做了某事”)

4 . 选词填空。
1. He ________(must/might) get here in time ,but I can’t be sure.
2. He ________(can’t/mustn’t) have missed the train; he arrrived at the train station two hours early.
3. That must be a mistake. No, it ________(can’t/mustn’t) be a mistake.
4. Paul did a great job in the speech contest. He ________(must/can) have practised many times last week.
5. He ________(may/must) be at his office now, but you’d better make a phone to make sure.
6. Look, someone’s in the room. Who ________(can/must) it be ?
7. It ________(must have /may have) rained last night, for the ground is still wet.
8. I don’t know where she is, she ________(may/must) be in Wuhan.
9. With drones’ ability to see ahead, they ________(could/should ) signal any problem, so that fast -moving trains would be able to react in time.
10. I ________(needn’t/can’t) have bought so much wine -only two people came.

5 . 丽贝卡笑着说。“你不可能，因为你不穿衬裙！”他们笑着跑回了树林。（汉译英）