25. Let’s go through the question ______we can take these measure at present.
A. as B. that C. which D. whether
24. They had no sooner arrived at the airport ______it was time to check in.
A. when B. before C. then D. than
23. Seize the chance, ______you will regret it.
A. so B. otherwise C. but D. however
22. They wanted to change ＄5,000 for the car, ______ we managed to bring the price down.
A. but B. so C. when D. since
21. ______ on, and you will succeed in solving the problems.
A. To keep B. Keeping C. Keep D. Having kept
20. -I’m going to the post office.
-_____you’re there, can you get me some stamps?
A. As B. While C. Because D. If
19. Why do you want a new job______ you’ve got such a good one already?
A. that B. where C. which D. when
18. After the war, a new school building was put up ______ there had once been a theatre.
17. ______ we’ll go camping tomorrow depends on the weather.
A. If B. Whether C. That D. Where
16. If we work with a strong will, we can overcome any difficulty, ______ great it is.
A. what B. how C. however D. whatever