定语从句习题

1. Don’t talk about such things of __________ you are not sure.

A. which

B. what

C. as

D. those

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

A. that

B. where

C. in which

D. the one

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

A. that

B. where

C. which

D. the one

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

A. that

B. where

C. which

D. the one

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

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 ___