The public transport system in Beijing is very good now, so there be any difficulty in tra

发布时间：2020-08-16 11:25:02


The public transport system in Beijing is very good now, so there     be any difficulty in traveling around the city.
A. couldn’t
B. mustn’t
C. needn’t
D. shouldn’t

网友回答

A. couldn’t
B. mustn’t
C. needn’t
(答案→)D. shouldn’t
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