A. Why

B. Whether

C. How

D. Where

12. _________ is known to all is that the earth is smaller than the sun.

A. As

B. What

C. It

D. Which

13. ______ surprised me most was ______ such a little boy of seven could play the violin so well.

A. Thatwhat

B. Whatthat

C. Thatwhich

D. Whatwhich

14. _____manners are very important in every country is known to all，but the trouble is that different countries have different ideas about ______good manners are.

A. That；what

B. That；that

C. What；that

D. What；what

15. ______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him.

A. 'That; that; which

B. What; that; what

C. That; because; that

D. What; because; which

16. ______ makes the school proud is ______ more than 90% of the students have been admitted to universities.

A. what; because

B. that; because

C. that; what

D. what; that

17. _______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today.

A. What; what

B. That; that

C. What; that

D. That; what

18. It is entirely true __________ children learn more from people they like. $o, try to be friends with them.

A. what

B. that

C. why

D. how

19. ______ amazed the NBA world is ______ Kobe Bryant scored 81 points just in one game.

A. That, what

B. What, that

C. That, that

D. What, what

20.________ surprises us most is that she doesn’t even know _______ the difference between the two opinions lies.

A. It; which

B. What; what

C. What; where

D. That; where