1.The book was written in 1946 the education system has witnessed great changes .
A.when
B.during which
C.since when
D.since then
2.He came back late which time all the guests had already left.
A.after
B.by
C.at
D.during
3.Their claim is likely to be successfulin case the company will be ordered to pay damages totaling$30000 .
A.that
B.whose
C.which
D.what
4.I don't know the reason you were absent from the meetingand I'm not sure that someone will tell me the reason you haven't told me.
A.why that
B.thatwhy
C.becausewhy
D.of whichthat
5.The girl isn't she was in the situation she was optimistic .
A.thatin which
B.whichwhat
C.whatwhere
D.what which
6. is known to us all is that the old scientist for life was hard in the past still works very hard in his eighties.
A.Aswhom
B.Whatwhom
C.Whatwhose
D.Itwhose
7.Mr wang was such a good teacher the students respect .
A.who
B.whom
C.that
D.as
8. the rockets coming into beingthe space age began China is sure to play an important role.
A.Aswhen
B.Withat which
C.Within which
D.Aswhile
9. He is so good a teacher in this school is loved by almost all the students .
A. that
B.which
C.than
D. as
10.This is the bag I lost yesterdaybut it 's not mine .
A.sameas
B.same that
C.verythat
D.such as
11.With the fast developing of agriculturethe people village I taught before have a happy life.
A.who
B.whose
C.in whose
D.whom
12.The solders reached was once an old temple the villagers used as a school. A.wherewhat
B.whatwhich
C.wherewhich
D.whatwhere
13.It was said was all he said .
A.thatthat what
B.thatthatthat
C.whichitthat
D.thatwhichthat
14.He said that little had been done was helpful to our study.
A.what
B.which
C.that
D.all that
15.He stood by the window he could see what was happening outside.
A.where
B.which
C.from which
D.from where。