11. Since you need the book badly, you might as well ______ a copy though it is expensive.

　　A. buy B. to buy

　　C. buying D. bought

　　12. Don't tell Lao Lin about it, ______ ?

　　A. will you B. won't you

　　C. can you D. can't you

　　13. He claimed ______ that mountain alone.

　　A. climbing B. to have climbed

　　C. to climb D. climbed

　　14. We'd better hurry ______ it's getting dark.

　　A. and B. but

　　C. unless D. as

　　15. There is something wrong with my computer. I'll have it ______.

　　A. repaired B. repair

　　C. repairing D. repairs

　　16. ______ busy he is, he always finds some time to read every day.

　　A. No matter what B. No matter how

　　C. No matter when D. No matter where

　　17. Look, ______ .

　　A. there he goes B. there goes he

　　C. he goes there D. he there goes

　　18. I don't mind ______ by bus, but I hate standing in queues.

　　A. to travel B. traveling

　　C. travel D. having traveled

　　19. ______ my parents could understand me !

　　A. Not only B. As to

　　C. As if D. If only

　　20. The tourists went ______ far that they got lost.

　　A. too B. such

　　C. very D. so