问题补充:
— Are you going to Beijing by air?
— It’s fast, but expensive. So I’m not sure. I take a train.
A. may
B. will
C. must
D. should
答案:
(答案→)A. may
B. will
C. must
D. should
解析:考查情态动词用法。may表示一种可能性比较小的推测,will 将,must是肯定性的推测,should应该,根据题中So I’m not sure,可知是一种不太肯定的推测,所以选A。
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