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27. Our profits will be good _____ the dollar remains strong.

　 A. if　 　　　　　　　　　　 B. although　 　　　 C. unless　 　　　　　　　　 D. as long as

26. Mr. Smith is _____ a good teacher _____ we all respect.

A. such…that　 　　　 B. such… as　　 　 C. so…that　　 　　　　　　 D. so…as

25. The harder you study, ____ you will serve the people.

　 A. the better　　 　　　　　　　 B. better　　 　　　　 C. the best　　 　　　　　　 D. the better that

24. Speak to him slowly ____ he may understand better.

　 A. in case that　 　　　 B. so that　 　　　　 C. because that　 　　　　 D. least

23. Important ____ his discovery was, it was regarded as a matter of no account in his time.

　 A. for　 　　　　　　　　　 B. to　 　　　　　　　　 C. although　 　　　　　　 D. as

22. We’ll wait here ____ you get back.

　 A. soon after 　　　　　 B. until　 　　　　　　 C. as soon as　　 　　　　　 D. when

21. Richard is ____ boy that everyone in the class likes him.

　 A. a so bright　 　　　　　　　 B. so a bright　 　　 C. such bright a　　 　　　 D. so bright a

20. I have kept that portrait ____ I can see it every day, as it always reminds me of my university days in London.

　 A. which　 　　　　　　 B. where　 　　　　　 C. whether　 　　　　　　　　　　 D. when

19. No sooner had we reached the top of the hill ____ we all sat down to rest.

　 A. when　　 　　　　　　 B. then　　 　　　　　 C. than　 　　　　　　　　　　 D. until

18. I felt somewhat disappointed and was about to leave ____ something occurred which attracted my attention.

　 A. unless　 　　　　　　 B. until　 　　　　　　 C. when　 　　　　　　　　　 D. while