题目内容
There is no light in the dormitory. They must have gone to the lecture, ________? (NMET 2004)
[ ]
A.didn't they
B.don't they
C.mustn't they
D.haven't they
答案:D
解析:
解析:
表示推测反义问句的形式一般参照时间状语确定.此处隐含的时间状语:(他们肯定)已经(去听报告了),所以用完成时. |
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