题目内容
1. ―Do you know the girl who is riding the bike?
―I've seen her several times but I don't know who she is.
1. Do you know the girl who is riding the bike?
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题目内容
1. ―Do you know the girl who is riding the bike?
―I've seen her several times but I don't know who she is.
1. Do you know the girl who is riding the bike?