应该是has happened
was happened 是 被 发生
has happened 是已经发生
was happened 是被动语态
was happen 才是过去式
has happened 是 完成时
A traffic accident ______(happen)on the road
A traffic accident ______(happen)on the road
应该填was happened还是填has happened?
能否填has happened?
应该填was happened还是填has happened?
能否填has happened?
英语人气:277 ℃时间:2019-10-18 02:42:38
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