16. He was lucky enough to sell his car for exactly ______.

A. where he had paid for it　　　　 B. what he had paid for it

C. what he was paid for it　　　　 D. which he had paid for it

15. Chances are high ______ China and Russia will make an agreement to build an oil pipeline.

A. when　　　 B. where　　 C. that　　 D. which

14. It is necessary that a college student ______ at least a foreign language. 　

A. should master　　　 B. masters　　 C. mastered　　　 D. will master

13. --All the building materials have been washed away.

--So I have heard. But there was no sign ______ a heavy rain was on the way last night.

A. when　　　　 B. that　　　 C. which　　　 D. if

12. The problem is ______ he has enough time.

　 A. if　　　　 B. whether　　　 C./　　　　 D. that

11. The advice ______ I should take some medicine sounds good.　

A. which　　 B. that　　　 C. /　　 D. what

10. Along with the letter was his promise ______ he would visit me this coming Christmas.

　 A. which　　　　　　　　　 B. that　　　　　　　　　 C. what　　　　　　　　 D. whether

9. The other day, my brother drove his car down the street at ______ I thought was a dangerous speed.

　 A. as　　　　　　　　 B. which　　　　　　　 C. what　 　　 D. that

8. These shoes look very good. I wonder ______.　

A. how much cost they are 　　　　　　　　 　B. how much do they cost

C. how much they cost 　　　　　　　　　　　 　D. how much are they cost

7. Nobody believed his reason for being absent form the class　______ he had to meet his uncle at the airport.　

A. why　　　　　　　　　 B. that　　　　　　 　C. where　　　　　 　 D. because