—-What difference will it make _____we shall go to the concert on Tuesday or Saturday?
—They offer a discount on weekdays.
A. that B. when
C. if D. why
It was announced that only after the candidates’ papers were collected _____to leave the room.
A. had they been permitted B. would they be permitted
C. that they would be permitted D. that they had been permitted
If we surround ourselves with people _____our major purpose, we can get their support and encouragement.
A. in sympathy with B. in terms of
C. in honour of D. in contrast with
The bus dropped me off and pulled away _____I realized I had left my bag on it.
A. while B. before
C. after D. since
If it had not been for the heroes’ contributions and sacrifices, we _____such a happy life.
A. wouldn’t have led B. wouldn’t be leading
C. haven’t led D. are not leading
—Kevin, time for the next destination!
—No hurry! Another 15 minutes and we _____ all the exhibition rooms of the museum.
A. am exploring B. have explored
C. will explore D. will have explored