句型转换：They are doing housewoek.(分别改成一般疑问句和否定句）The students are cleaning theclassroom.(改为一般疑问句并做肯定和否定回答） I m playing the football in the piayground.(把in the piayground进行疑问） Tom is reading books in hie study.(对reading books进行疑问）

They are doing housewrok一般疑问句：Are they doing housework？否定句：They are not doing housework! The students are cleaning the classroom一般疑问句：Are the students cleaning the classroom.肯定回答：yes，they are。否定回答：no，they aren't。
Are you playing football in the playground?
Is Tom reading books in his study?

1.are they doing housework, they are not doing housework.
2.are the student cleaning the classroom? yes, they are. no they aren't
3.where are you playing the football.
4.what is Tom doing in his study

1Are they doing housework?They are not doing housework.2Are the students cleaning the classroom?Yes,they are./ No,they are not.3Where are you playing the football?4What is Tom doing in his study.：）...