they do homework at seven o'clock every day怎么变一般疑问句?
人气：195 ℃ 时间：2019-10-19 16:37:37
解答
原句中的do是实义动词,不是助动词,所以要在句首加助动词do帮助表示疑问：
Do they do homework at seven o'clock every day?
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