问题: 句型转换
They are doing housework.分别改成一般疑问句和否定句 The students are cieaning the ciassroom改一般疑问句并作肯定和否定回答 I'm piaying the footbaill in the piayground对in the piayground提问
解答:
They are doing housework.改成
一般疑问句: Are they doing housework?
否定句: They are not doing housework.
The students are cieaning the ciassroom改
一般疑问句：Are the students cleaning the classroom?
作肯定回答：Yes(, they are).
否定回答：No（，they aren't).
I'm piaying the footbaill in the piayground
对in the piayground提问: Where are you playing the football?
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