A. that
B. where
C. in which
D. in that
6. The freezing point is the temperature ________ water changes into ice.
A. at which
B. on that
C. in which
D. of what
7. This book will show you _________ can be used in other contexts..
A. how you have observed
B. what you have observed
C. that you have observed
D. how that you have observed
8. The reason is ________ he is unable to operate the machine.
A. because
B. why
C. that
D. whether
9. I 'll tell you __________ he told me last week.
A. all which
B. that
C. all that
D. which
10. That tree, ________ branches are almost bare, is very old.
A. whose
B. of which
C. in which
D. on which
11. I have bought the same dress ________ she is wearing.
A. as
B. that
C. which
D. what
12. He failed in the examination, ________ made his father very angry.
A. which
B. it
C. that
D. what
13. We're talking about the piano and the pianist ______ were in the concert we attended last night.
A. which
B. whom
C. who
D. that
14. The girl ______ an English song in the next room is Tom 's sister.
A. who is singing
B. is singing
C. sang
D. was singing
15. Those ___ not only from books but also through practice will succeed.
A. learn
B. who
C. that learns
D. who learn
16. Anyone ______ this opinion may speak out.
A. that against
B. that against
C. who is against
D. who are against
17. Didn 't you see the man _______
A. I nodded just now
B. whom I nodded just now
C. I nodded to him just now
D. I nodded to just now
18. Can you lend me the novel the other day