She used to be good( )History at school.空中两个字母.急.

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Sheusedtobegood()Historyatschool.空中两个字母.急.Sheusedtobegood()Historyatschool.空中两个字母.急.Sheusedtobegood(

She used to be good( )History at school.空中两个字母.急.
She used to be good( )History at school.
空中两个字母.急.

She used to be good( )History at school.空中两个字母.急.
be good at 固定用法,擅长于...

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