___theageoffifteen,shehadwrittenscoresofarticlesforanewspaper.__中填at还是by,
2022-05-08 44次 反馈错误 加入收藏 正确率 : 100%
题目内容：
___the age of fifteen,she had written scores of articles for a newspaper.__中填at还是by,
优质解答
by,因为后面用的是完成时,用at则构成过去的时间状语,我i应该用一般过去时
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