did 后面有实意动词 go
要用 助动词 帮助提问那为什么what were you doing when Liu Xiang won the game?要用were？过去进行时 构成是 was were +动词ing所以用were
Where ____ you sister go yesterday?填was还是did?
Where ____ you sister go yesterday?填was还是did?
为什么what were you doing when Liu Xiang won the game?要用were？
为什么what were you doing when Liu Xiang won the game?要用were？
英语人气：300 ℃时间：2019-10-11 08:51:30
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