题目内容
1. Where are my socks? I can't find (they/them) .
2. Mary (try/is trying) on her new skirt now.
1. them 2. is trying
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题目内容
1. Where are my socks? I can't find (they/them) .
2. Mary (try/is trying) on her new skirt now.
1. them 2. is trying