15. Those __________ not only from books but also through practice will succeed.

A. learn

B. who

C. that learns

D. who learn

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

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

12. He failed in the examination, __________ made his father very angry.

A. which

B. it

C. that

D. what

11. I have bought the same dress __________ she is wearing.

A. as

B. that

C. which

D. what

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

A. whose

B. of which

C. in which

D. on which

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

A. all which

B. that

C. all that

D. which

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

A. because

B. why

C. that

D. whether

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

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

A. at which

B. on that

C. in which

D. of what