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A.ButIamnotexpertinEnglish,especiallylisteningandwriting.B.ButIamnotexpertinEnglish,especiallyinlisteningandwriting.哪种说法对?为什么?

题目详情
A.But I am not expert in English,especially listening and writing.
B.But I am not expert in English,especially in listening and writing.
哪种说法对?为什么?
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答案和解析
应该是B,后边省略I'm not expert