—He must be busy doing his homework right now.

—I imagine____.

A. that　　 B. to　　 C. so　　 D. it

They decided to drive the cow away _____ it did more damage.
  A. before     B. after    C. until    D. while

The policeman put down the phone, ＿＿＿with a smile on his face.

　　A.satisfied   B.satisfying   C.to be satisfied   D.having satisfied

I don’t like to go out for a picnic on such a wet day.________，I don’t have time now.

A．Furthermore B．Therefore

C．Otherwise D．Nevertheless

Henry killed the dog. I'll ask him why ________.

A. did he do that

B. he did that

C. he did

D. he has done so

　 ，it was finished on time．

　 A．As was the work difficult　　　 B．Difficult as was the work

　 C．Difficult as the work was　　　 D．As the work was difficult

The poor mother,badly ill in bed for a long time,had to have her little son____at his uncle’s.

A.adapted　　　　　 B.adopted　　　　　 C.adjusted　　　 D.applied

Mary wanted to travel around the world all by herself，but her parents did not　　 her to do so.?

A.forbid　　　　　　　　 B.allow?　　　　　 C.follow　　　　　　 D.ask