8. That tree, __________ branches are almost bare, is very old.

A. whose

B. of which

C. in which

D. on which

7. I’ll tell you __________ he told me last week.

A. all which

B. that

C. all that

D. which

6. The reason is __________ he is unable to operate the machine.

A. because

B. why

C. that

D. whether

5. The freezing point is the temperature __________ water changes into ice.

A. at which　　　　 B. on that　　　　　 C. in which　　　　 D. of what

4. The wolves hid themselves in the places __________ couldn’t be found.

A. that

B. where

C. in which

D. in that

3. Is this the factory __________ he worked ten years ago?

A. that

B. where

C. which

D. the one

2. Is this factory __________ some foreign friends visited last Friday?

A. that

B. where

C. which

D. the one

1. Is this the factory __________ you visited the other day?

A. that

B. where

C. in which

D. the one

3. ---- What did the football player you were talking to want?

　---- He would like to read or listen to an account of everything there is going on in the world.

强化练习：

2. He asks for the latest book there is on the shelf.