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
人气：150 ℃ 时间：2020-04-13 11:02:40
解答
We haven't been waiting since 8:oo.
How long has she been reading
How long has he been running 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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