24.He paid the boy $ 10 for washing ten windows ,most of 　　　hadn't been cleaned for at least a year.

A.these　　　　　　　　　　　 B.those

C.that　　　　　　　　　　　　 D.which

23.When I was at college I　　　　 three foreign languages, but I　　　　 all except a few words of each.

A.spoke; had forgotten　　　　 B.spoke; have forgotten

C.had spoken; had forgotten　 D.had spoken; have forgotten

22.Last summer I took a course on　　　　　　 .

A.how to make dresses　　　　 B.how dresses be made

C.how to be made dresses　　　 D.how dresses to be made

21.I don't think　　　　 possible to master a foreign language without much memory work.

A.this　　　　　　　　　　　　 B.that

C.its　　　　　　　　　　　　 D.it

20.A library with five thousand books　　　　　　 to the nation as a gift.

A.is offered　　　　　　　　　 B.has offered

C.are offered　　　　　　　　 D.have offered

19.Not until I began to work　　　　 how much time I had wasted.

A.didn't I realize　　　　　　 B.did I realize

C.I didn't realize　　　　　　 D.I realized

18.Beyond　　　　　　 stars, the astronaut saw nothing but　　　　　　 space.

A.the;(不填)　　　　　　　　　 B.(不填);the

C.(不填);(不填)　　　　　　　 D.the;the

17.If we had followed his plan, we could have done the job better with　　　　 money and　　　　　　　 people.

A.less; less　　　　　　　　　 B.fewer; fewer

C.less; fewer　　　　　　　　 D.fewer; less

16.The new secretary is supposed to report to the manager as soon as she　　　　　　 .

A.will arrive　　　　　　　　 B.arrives

C.is going to arrive　　　　　 D.is arriving

15.　　　　　　 the day went on, the weather got worse.

A.With　　　　　　　　　　　　 B.Since

C.While　　　　　　　　　　　 D.As