单项选择题

John isn't here. He's on assignment in New York. So the person you spoke to this morning ______ have been John.

A．must
B．might
C．might not
D．can't
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单项选择题
He is always complaining about one thing or ______.
A．others
B．something
C．another
D．everything
单项选择题
—I'll give him my answer tomorrow, —So ______ .
A．will I
B．am I
C．I will
D．I am
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