Question

---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.

Answer 1

D

试题分析： 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。