which
for which
in which
why
第1题：
A、to which
B、of which
C、which
D、that
第2题：
we moved to the country so that the kids would have a garden ________to play.
A.with which
B.in which
C.for which
D.about which
第3题：
A.in which
B.on which
C.for which
D.to which
第4题：
A、everything
B、everything which
C、which
D、to which
第5题：
The reason _______he explained is not I expected.
A. for, that
B. why, that
C. that, what
D. what, that
参考译文：他解释的理由不是我所期待的。定语从句的关系代词that作explain的宾语： what引导表语从句。
第6题：
A、where
B、which
C、on which
D、that
第7题：
Gun control is a subject ____ Americans have argued for a long time.
A．of whichB．with whichC．about whichD．into which
第8题：
—The light in his room is still on. Do you know??____________?
—In order to prepare for the coming exam.
A. if he works hard B. why he stays up so late
C. why is he so busy D. when he will stop working
第9题：
The boy pointed to the direction() he would run.
A. in which
B. to which
C. that
D. which
第10题：
A、which
B、on which
C、where
D、that