There was an accident that happened on the road.能否把that happened改为happening,为什么?

翻译There was an... There was an error on the site. There was an accident yesterday,____? There Was An Old Lady 歌词 There was an error sending your There was an apple on the table复数句 Once upon a time,there was an emperor... Once Upon A Time There Was An Ocean 歌词 There was an English party night.改为复数形式 There was an English film in ()cinema Athe Ba 为什么google 翻译 api 总是返回 There was an error. there was an increase of 38 percent in 1991over1996 In january ,there was an earthquake in hati. There was an u( ) smile on his face was in the there livingroom an accident怎么拼 there was an isl and where all the feelings there was an old lady who swallowed a fly There was an error with your submission 是什么东西错误？