i was doing my homework this time yesterday
昨天这个时候我正在做作业
以上为机器翻译结果，长、整句建议使用 人工翻译 。
He asked if I was doing my homework this time yesterday.
他问我昨天这个时候是否在做作业。
youdao
I was doing my homework at this time yesterday.
昨天的这个时候我正在做作业。
I was doing my homework at this time of yesterday.
昨天这个时候我一直在做作业。
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