--- Have you been here before?
---- This is the second time I ______to the Great Wall.
A. comes B. have been C. came D. had come
---- Shall we go to the art exhibition right away?
---- _____.
A. It’s your opinion B. I don’t mind
C. It’s all up to you D. That’s your decision.
_______the programme, they have to stay there for another three weeks.
A. Not completing B. Not completed
C. Not having completed D. Having not completed
--- Is Mr. Smith in the office?
--- Yes，_____ he is in charge of the office，he must be there.
A. however B. since C. whether D. for
He moved to Germany in _____, when he was in _____.
A. the late 1990s; his sixties B. late 1990s; his sixties
C. the late 1990s; the sixties D. late 1990s; the sixties
______ the day went on, the weather got worse.
A. With B. Since C. While D. As
