in which 用法,求详解
in which 用法,求详解
The time will come ______ man can fly to outer space freely.
A.that B.when C.in which D.which
The time will come ______ man can fly to outer space freely.
A.that B.when C.in which D.which
英语人气：365 ℃时间：2020-02-25 13:30:26
优质解答
应该选B.when
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