问题描述：
情态动词选择题
You__shout at such a shy people because it_____upset him
A.should ,can
B.may,will
C.mustn't,may
D.may
You__shout at such a shy people because it_____upset him
A.should ,can
B.may,will
C.mustn't,may
D.may
问题解答：
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