21.It’s time___about the pollution problem in the city.

A.everything is done

B.anything will be done

C.nothing to be done

D.something was done

22.Bob tried in vain to talk his little brother ___some money from their mother’s purse.

A.to steal

B.to stealing

C.into stealing

D.into steal

23.When I saw Jane,I stopped and smiled,but she___me and walked away.

A.refused

B.ignored

C.denied

D.missed

24.Little___the danger he is in.

A.he realizes

B.he has realized

C.does he realize

D.he does realize

25.The book lists the phenomena and explains the reason___.

A.as well

B.only

C.excessively

D.as well as

26.Parents love their children with a devotion ___ no return.

A.which they ask for

B.for which they ask

C.for which they ask for

D.which they ask

27.If you had come here yesterday,you ___him.

A.would see

B.would have seen

C.saw

D.had seen

28.___alone,I turned on the radio for company.

A.Be

B.Been

www.examw.com C.Being

D.Having been

29.I don’t expect you ___the exam again.

A.fail

B.to fail

C.failing

D.to be failed

30.It___ him only half an hour to finish his homework,and he ___ most of the evening watching TV.

A.cost,paid

B.took,used

C.took,spent

D.used,spent