I don’t think one country can solve the problem of pollution alone, _______?
A. do I B. may I
C. can it D. can’t it
--- Have you finished all your homework?
--- Of course. I ______ it before I went out to play football.
A. had finished B. have finished
C. finished D. was finishing
Shangri-la, a place of mystery and beauty, is indeed a heavenly world ______ people live in.
A. who B. which
C. when D. where
---You are confident about passing the coming test, aren’t you?
---______. I’m well prepared and feel I will make it.
A. Sure, I am B. It’s hard to say
C. I hope so D. Well, maybe
.Very loud noises ______ make people ill. So we ______ make great noise
A. must ; mustn ' t B. need ; needn ' t
C. can ; mustn ' t D. must ; can ' t
When you travel to a city, you’d better buy a ______ to get information about it.
A. computer B. suitcase
C. guidebook D. camera
