________ advertisements are of great help, I don’t think we should entirely rely on them.
A.Because | B.Since | C.Once | D.While |
You’d never heard of it before I told you,________?
A.did you | B.didn’t you | C.would you | D.had you |
You all had a good time yesterday,________?
A.hadn’t you | B.haven’t you | C.didn’t you | D.don’t you |
The Greens seldom go to the concert,________?
A.don’t they | B.do they | C.don’t he | D.do he |
The shop doesn’t open until 11 a. m.,________ it loses a lot of business.
A.for | B.or | C.but | D.so |
Most of the Europeans refuse to accept GM food________Americans regard it as the fruit from high tech.
A.when | B.as | C.while | D.the moment |