题目内容
It’s hard to say what kind of person he is. Sometimes he is very nice; at other times he _______ be very cold.
A. must B. will C. shall D. can
D
解析:
略

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题目内容
It’s hard to say what kind of person he is. Sometimes he is very nice; at other times he _______ be very cold.
A. must B. will C. shall D. can
D
略