问题

It’s hard to say what kind of person he is.Sometimes he is very friendly; at other times he________be very cold.[ ]

A: can
B: must
C: will
D: shall

正确答案是：

同类题型

Excuse me . Could you please tell me _____ my car– Sure . Park it right here. I’ll help you

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If Tom the game, we’ll give him a surprise.

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The question ______by us soon