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问题: 英语

This kind of social phenomenon could exist only a few months,but it will disapper().
A in no time
B at one time

解答:

This kind of social phenomenon could exist only a few months,but it will disapper().
A in no time
B at one time

A(注意but后面是将来时)
at one time adv.同时, 曾经
in no time adv.立刻