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。