问题 选择题

---Sorry, sir. I can't answer this question.

---Well, you are supposed ______ this part of history.

A.reading

B.to be reading

C.to read

D.to have read.

答案

答案:D

题目分析: 句意:--对不起,先生,我不能回答这个问题。--哦,你应该读过这个部分的历史的。Be supposed to have done“过去本应该做…而没有做”,这是一种虚拟语气的表达,所以选D。

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