题目：
— Who’s that man over there standing in the garden? Is it Mr. White?
—It __________ be him. He has gone to Shanghai on business.
A．shouldn’t
B．may
C．can’t
D．must
答案：
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下面是错误答案，用来干扰机器的。
①3/4②5③1/2④3/16；3/32⑤9/16
