It was __________ you had done ________made it possible for you to improve

　 your English.　　　　　　　　　　　　　　　　

　 A. that/ that B. that / what C. what/ what D. what/ that

他们正在把沙漠变成农田。(change...into)

—There is only 15 minutes left for work．What shall we do?

—My God! There are always not any taxis when you want _______．

A．one　　　　　 B．it　　　　　　 C．that　　　　　　 D．any

Although he gets good ________ by renting houses，I strongly disapprove that he should continue hanging around without an occupation．

A. wages　 　 　　　 B. fees　 　　　　　 C. salaries　 　　　 D. incomes

The chairman thought________necessary to invite Professor Smith to speak at the meeting.?

A.that　　　　　　B.it　　　　　　C.this　　　　　　　D.him

This is her only request that the room ______ after being used.

　 A. be cleaned　　　 B. is cleaned　　　 C. will be cleaned　　　 D. would be cleaned

________ we go swimming every day ________ us a lot of good.

A. If...do

B. That...do

C. If...does

D. That...does

We want some _________ (志愿者) to help paint the house.