题目内容
句型转换
He did his homework for half an hour.
（变为一般疑问句）________ he ________ his homework for half an hour?
答案：Did;do
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天天向上一本好卷系列答案小学生10分钟应用题系列答案题目内容
句型转换
He did his homework for half an hour.
（变为一般疑问句）________ he ________ his homework for half an hour?
天天向上一本好卷系列答案小学生10分钟应用题系列答案