现在完成进行时 have been doing.
因为搜救工作持续到说话的时间点仍然在继续,但是搜救无果.
did you find the missing couple in the mountain yesterday?--no ,but we( )to get
did you find the missing couple in the mountain yesterday?--no ,but we( )to get
in touch withthem ever since.
A.have tried b.have been trying 为什么选B B的时态是什么?A不对么?
in touch withthem ever since.
A.have tried b.have been trying 为什么选B B的时态是什么?A不对么?
英语人气：111 ℃时间：2020-03-24 17:22:37
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