---How do you deal with the disagreement between the company and the customers?

--The key ________ the problem is to meet the demand ________ by the customers.

A. to solving; making 　　　　　　　　　 B. to solving; made

C. to solve; making 　　　　　　　　 D. to solve; made

I will call back later. At p_________ I am busy with my lessons.

The computer，________ help we human beings have stepped into the information age，should be regarded as one of the most important inventions in the 20th century.

A．which 　　　　　 B．whose

C．with its 　　　　　 D．with whose

—So I'm going to make the desk myself.

—Why ________ instead, if I may ask?

A．not buy it B．not buy one　 C．don't buy one D．don't buy it

他提高嗓音以便别人能够听见他。

He raised his voice so as to _________himself ____________.

The winning of hosting ______ 2010 World Expo is ______ victory not only for Shanghai residents, but for the people of the whole Chinese nation.

A. the; a　　　 B. a; the　　 C. a; a　 D. the; the

Last summer holiday, I went back to my hometown, ________ the neighbours and the house ________ I used to be familiar with were gone.

　　A. only finding; which　　　B. only to find; that

　　C. to find; whom　　　　　　D. found; that

--Does Betty know where his violin is?
--She saw somebody walking off with one, but she doesn't know __________.
A. whose        B. it          C. what         D. which

—Shall I inform him of the change of the schedule right now?

—I am afraid you _______ , in case he comes late for the meeting.

A.will　　　 B.must　 C.may　　 D.can

If city noise _______ from increasing, people _______ shout to be heard even at the dinner table 20 years from now.

A. are not kept; will have to 　 B. are not kept; have to

C. do not kept; will have to 　 D. do not kept; have to