问题

Why are those people gathering in the middle of the street?— I don’t know. There ____ be an accident.[ ]
A: shall
B: should
C: can
D: might
B: should
C: can
D: might
正确答案是:
同类题型
Shall we call for a taxi—OK. Let me _______ the phone number in Zheng Zhou Yellow Pages.
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He has arms now and is able to pick the table up with one hand.
There are three ______ students on the playground.
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