Lastmonthshewasexplainingtooneofherclassaboutsound.这句话有错么
2021-06-02 104次 反馈错误 加入收藏 正确率 : 100%
题目内容：
Last month she was explaining to one of her class about sound .这句话有错么
优质解答
Last month she explained to one of her class about sound.
was explainin改为explained
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