问题
My pain _______ apparent the moment I walked into the room, for the first man I met asked sympathetically， “Are you feeling all right?”
A:must be
B:must have been
C:should have been
D:could have been
B:must have been
C:should have been
D:could have been
正确答案是：
同类题型
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Isn’t it time you got down tothe papers
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