题目列表(包括答案和解析)
35. A wide vocabulary is the key to successful language learning but don’t try to learn too much ______.
A. at least B. at once C. at last D. at most
34. The importance of saving gas ______ be stressed too much. Automobiles use up some 70 billion gallons of gas a year.
A. cannot B. mustn’t C. shouldn’t D. may not
28. Whether you believe it or not, it is ______ that causes your illness.
A. because of your overweight
B. because you are overweight
C. you are so overweight
D. your being overweight
32. Because of _____ mail we receive, we may not be able to reply to your letter. Please remember to include your full name with your letter.
A. a great many of B. a large number of
C. the large amount of D. a great plenty of
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