20.It was unfortunate that their new car ____ halfway to the airport.

　 A. broke off　　　 B. got over　　　　 C. broke down　　 D. got away

19. --- Your brother is very careful and honest.

　 --- I agree. What he has just done ____ itself.

　 A. speaks out　　　 B. thinks of　　　　 C. speaks for　　　 D. thinks out

18. ____, he doesn’t study well.

　 A. As he is clever　 B. He is as clever　　 C. Clever as he is　 D. As clever he is

17. It is in this very village, where Lily was born 30 years ago, ____ she will build her first art school, ____ involves many people to help her.

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

16.____ is known to us all is that the old artist, for whom life was hard in the past, still works very hard in his eighties.

　 A. What　　　 B. it　　　　 C. As　　　　 D. Which

15. The sunspot came into its active stage, ____ that happens once every eleven years.

　 A. one　　　 B. it　　　　 C. the one　　 D. what

14. The famous scientist, ____ a dinner party will be held tonight, is to arrive soon.

　 A. in his honor B. in whose honor C. in which honor D. in honor of him

13. The driver could have survived but he ____ the seat belt.

　 A. had been fastening B. hadn’t fastened　 C. was fastening　 D. didn’t fasten