C
how long 是一个时间段,所以要用状态How long __there when you visited the city >A have you stayed B did you stayA
How long__?Do you know?A have they married B have they got married C have they been married
How long__?Do you know?A have they married B have they got married C have they been married
D have they been married to
D have they been married to
英语人气：732 ℃时间：2020-03-23 03:55:33
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