We have been waiting since 8.00(改为否定句） she has been reading

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/09/30 20:17:48

We have been waiting since 8.00(改为否定句） she has been reading for an hour（对for an hour提问）
He has been running since i arrived（对since I arrived提问）
谢谢了这些句型转换

We haven't been waiting since 8:oo.
How long has she been reading
How long has he been running
再问：我第一和第二和你的一样不知道对不对再看看其他回答

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