定语从句练习：

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 __________ 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?

A. that you talked B. you talked about it

C. which you talked with D. you talked about

19. Is there anything _______ to you?

A. that is belonged B. that belongs

C. that belong D. which belongs