问题

. With examinations coming immediately, you ________ the Internet last night.

A:mustn’t surf
B:shouldn’t surf
C:couldn’t have surfed
D:shouldn’t have surfed

正确答案是：

同类题型

Is it the book that ________ people of allages ______ became the best-seller last year

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Has your father got up?—Sorry, I’m not sure. He __________ got up. Please go and see for yourself.