310. He was too tired to go on reading.

A. 　I’m afraid not, because I have to go to an important meeting

B. 　Of course not. I have no idea

C. 　No, I can’t

D. 　That’s all set

A. 　which

B. 　that

C. 　where

D. 　on which

A. 　doesn＇t

B. 　isn＇t

C. 　does

D. 　is

A. 　answer

B. 　cause

C. 　effect

D. 　work

A. 　There must be something wrong.

B. 　Just have a good rest.

C. 　Yes, thank you, doctor. But I still don＇t feel good.

D. 　Don＇t worry about me.