Jimmy could play the piano at the age of five.（改为同

发布时间：2021-02-27 21:24:59

Jimmy could play the piano at the age of five.（改为同意句） Jimmy

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was able to when
be able to是固定短语 could 是过去式所以用was
======以下答案可供参考======
供参考答案1:
Jimmy was able to play the piano when he was five
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