The time he has devoted in the past years _______ the disable is now considered ________ of great value.

A. to help; being　　 　　　　　　　B. to helping; to be

C. to help; to be　　 　　　　　　　 D. helping; being

If city noises　　　 from increasing，people　　　 shout to be heard even at the dinner table．

A.are not kept；will have to　　　 B．a(chǎn)re not kept；have to

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

They are the people 　　　　 themselves on the bench.?

A.sitting　　　　 B.seating　　　　 C.seated　　　　 D.sat

Jane tried to keep up a calm appearance，but her trembling voice ________.

A．gave her away 　　　 B．gave her out

C．gave her in 　　　　 D．gave her up

This is the very reason ______ he gave for his coming late to the meeting.

　 A. that　 　　　　　 B. which　 　　　　　C. as　 　　　　　 D. why

You talk as if you ___ there.
A. were really 　　 B. has really been 　　 C. had really been D. would really be

Mark Twain left_____ school at _____ of twelve to look for work.

A the ; the B / ; the　 C / ; /　 D the ; /

Many lifestyle patterns do such __great harm to health that they actually speed up ____ weakening of the human body.

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

It is said that it is going to be fine tomorrow. Let’s go camping, ____ we?

A. don’t                      B. will                    C. shall                  D. do

When it _________ high technology, he is completely at a loss.

A. refers to　　 B. comes to　　 C. happens to D. speaks to