_______ the production up by 60%, the company has had another excellent year.
A. For         B. As       C. Because         D. With

Not until the rain stopped_________ home.

A. he went　　 B. he had gone

C. did he go　　 D. he did go

The firemen managed to _____ the fire in time.

A. extinguish B. prevent 　　C. suppress　　 D. ruin

E-mail, as well as telephones, ____ an important part in daily communication.

a. is playing　 b. have played　 c. are playing　 d. play

Nowadays people sometimes separate their waste to make it easier for it ______.      .
A. reusing  B. reused  C. reuses  D. to be reused

Since the beginning of the vacation，I______across the country，and my next stop is the Wuyi Mountains.

A．had traveled　　　 　 B．will travel

C．have been traveling　 D．was traveling

After going to school, my little son has _____many bad habits.

A. got away from　 　　　　　　 B. broken from　

C. kept away from 　　　　　　 D. stayed away from

——I don’t really like James. Why did you invite him?

——Don’t worry. He　　　 come. He said he wasn’t certain what his plans were.

A. must not　 B. need not　　 C. would not　　 D. might not

In those days, we had no phones, so we have to keep in touch _____ writing often.

A. with　　　　　　　　　　 B. of

C. on　　　　　　　　　　　 D. by

By the time Jack returned home from England, his son_____ from college.

A. graduated　　　　　　　　　 B. has graduated

C. had been　　　　　　　　　　 D. had graduated