Either the boy or his sister must have   dinner here.

A. his   B. her  C. their   D. theirs

As is known to us, theory is based on practice and     servers practice.

A. by chance  B. in turn   C. in return  C. by turn

Because prices of food and clothing and almost everything else in that country have steadily gone up, the buying          of the dollar has gone down.

A. energy   B. force  C. power  D. strength

. Going out for tea with friends   increasingly popular during the past twenty years.

A. becomes  B. became  C. has become   D. had become

Key: C

---Look! The clouds are gathering.

  ---Yes. I’m afraid it    be pouring down soon.

A. can   B. must   C. should   D. might

Children who are always   by their parents soon become selfish.

A. put away   B. looked after  C. given into  D dealt with

The boy was made to    the explanation(解释，说明 process of explaining) .

A. speak   B. tell   C. repeat   D. say

The two countries were    between 1989 and 1992.

A. peace   B. at no war   C. at peace   D. at peaceful

It’s    impossible for us to finish the task within half a month.

A. very   B. rather  C. quite   D. much

He is clever and hard-working, so he has    reason to succeed in the exam.

A. every  B. everyone  C. neither  D. any