1. ______ is natural, he married Mary.

　　A. It

　　B. What

　　C. Which

　　D. As

　　2. The buses, ______ were already full, were surrounded by an angry crowd.

　　A. most of them

　　B. most of which

　　C. which most

　　D. that most

　　3. All ______ is needed is a supply of oil.

　　A. the thing

　　B. that

　　C. what

　　D. which

　　4. He paid the boy 10 dollars for washing ten windows, most of ______ had not been cleaned for years.

　　A. these

　　B. those

　　C. that

　　D. which

　　5. She heard a terrible noise, ______ brought her heart into her mouth.

　　A. it

　　B. which

　　C. this

　　D. that

　　6. In the dark street, there wasn't a single person ______ she could turn for help.

　　A. that

　　B. who

　　C. from whom

　　D. to whom

　　7. This is one of the means ______ the electric energy is conducted from one place to another.

　　A. by which

　　B. by that

　　C. through which

　　D. through that

　　8. The place ______ you are going to visit is the ruin of a place.

　　A. in which

　　B. at which

　　C. where

　　D. which

　　9. The last river ______ they crossed is two miles wide.

　　A. where

　　B. which

　　C. that

　　D. in which

　　10. The Summer Palace is one of the most beautiful parks ______ built in the Qing Dynasty.

　　A. where were

　　B. where was

　　C. that were

　　D. which was

　　11. The factory ______ I am going to is the place ______ my mother used to work many years ago.

　　A. where, where

　　B. where, which

　　C. which, where

　　D. that, which

　　12. Don't trust such men ______ over praise you to your face.

　　A. as

　　B. that

　　C. who

　　D. which

　　13. The professor has two sons, ______ are teaching in the same university.

　　A. neither of them

　　B. either of them

　　C. both of them

　　D. both of whom

　　14. Don't do such things ______ you are not sure about.

　　A. that

　　B. which

　　C. as

　　D. what

　　15. Rober is good at language, ______ we all know.

　　A. because

　　B. for

　　C. as

　　D. since

　　16. China has hundreds of islands, ______ we all know.

　　A. in which

　　B. at which

　　C. of which

　　D. which

　　17. She wrote a letter to her father, ______ she made her secret known.

　　A. which

　　B. that

　　C. in which

　　D. where

　　18. Oxygen is a kind of gas, ______ we couldn't live.

　　A. without it

　　B. without that

　　C. without which

　　D. if not

　　19. Matter is anything ______

　　A. that take up space and have weight

　　B. which take up space and have weight

　　C. that takes up space and has weight

　　D. those take up space and have weight

　　20. I have many books, the best ______ was borrowed by Mary.

　　A. about them

　　B. of which

　　C. among them

　　D. in which

　　参考答案：

　　1-5 DBBDB 6-10 DADCC

　　11-15 CADCC 16-20 CCCCB