单项选择题：
1. I, ___your good friend, will try my best to help you out.
A.who is B.who am C.that is D.which am
2. The old man has two sons, ___are lawyers.
A.both of them B.both of who C.both of whom D.both of they
3. He is a man of great knowledge, ___much can be learned.
A.in whom B.about whom C.from whom D.of whom
4. I can tell you ___he told me last week.
A.all which B.all what C.that all D.all that
5. Is oxygen the only gas ___helps fire burn?
A.that B./ C.which D.what
6. Air, ___we breathe every day, is around us all the time.
A.that B./ C.which D.it
7. This is the museum ____we saw an exhibition the other day.
A.that B.which C.where D.in that
8. This museum is ___you visited the other day.
A.that B.which C.where D.the one
9. This is the museum ___you saw the other day.
A.that B.where C.in which D.in that
10. It is the third time ___late this month.
A.that you arrived B.when you arrived
C.that youve arrived D.when youve arrived
11. It was in 1969___the American astronaut succeeded in landing
on the moon.
A.that B.which C.in which D.when
12..We often think of the days ___we spent together on the island.
A.when B.which C.in which D.during which
13. Have you ever been to Shanghai, ____I left ten years ago?
A.where B.which C.that D.when
14. He has left Beijing, ___a meeting is to be held.
A.when B.where C.as D.which
15. This is the very place ___Im wishing to live in.
A.where B.which C.that D.in which
参考答案：
1-5 BCCDA 6-10CCDAC 11-15ABBBC
