___________happened to be out that day, so you didn't find me.

A. It　　　 B. This　　　　 C. You　　　　 D. I

Noise is unpleasant, ___________ when you are trying to sleep.

　 A. probably　　 B. exactly　　 C. especially　 D. only

She set out soon after dark 　　　　 home an hour later.?

A.arriving　　　　　B.to arrive　　　　　C.having arrived　　　　　D.and arrived

You’re driving too fast. Can you drive ____?

A. more slowly a bit B. slowly a bit more C. a bit more slowly D. slowly more a bit

How many countries will ____________(参加) in the next Olympic Games, do you know?

This medicine can’t be __________________(误用), otherwise it will do great harm to you.

I don’t know what to deal with my old books.

----- May I put my luggage on the seat beside you, madam? If it is free?

　　　 -----________ .

A. Sure, with pleasure　　　 B. Oh, please yourself

C. Well, never mind　　　　 D. Yes, help yourself　

By nine o’clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ____ appeared a rare rainbow soon.

　 A. of which　　　　　 B. on which　　　 C. from which　　　 　 D. above which