Some policemen were sent there to ___________ the villagers ___________ down the trees.

A. keep; cutting

B. prevent; cutting

C. prevent; to cut

D. stop; to cut

 Unless you ___________ nature, you are sure to be punished by nature.

A. go against   B. go across

C. go by         D. go over

 We need to improve the          of our new range of products.

A. look        B. expression

C. appearance   D. outlook

 The teacher as well as a number of students ______ to attend the party yesterday.

   A. were asked    B. was asked

   C. were asking    D. was asking

 People will be encouraged to eat healthy food, ________ and to drink less beer and wine.

   A. not to smoke  B. don’t smoke

   C. not smoke    D. not smoking

_______ what you said, he got very angry.

A. Because　 B. Because of

C. Since　　　 D. For

 All        made        possible for China to succeed in carrying on its reforms and open-door policy.

A. what happened; it

B. what happened; that

C. that happened; it

D. that happened; that

The way he did it was different _______ we were used to.

A. in which　　 B. in what

C. from what　 D. from which

 All these gifts must be mailed immediately so as to be received _________Christmas.

   A. after          B. in time

   C. in time for     D. in no time

 They don’t allow ______ here. That is to say, we are not allowed _____ here.

A. to smoke; to smoke

B. smoking; smoking

C. to smoke; smoking

D. smoking; to smoke