睛天ADGJ_dd
幼苗
共回答了20个问题采纳率:95% 举报
1.Are they doing housework?They aren't doing housework.
2.Are the students cleaning the classroom?Yes,they are.No,they aren't.
3.I'm not playing football on the playground.
4.I Tom reading books in his study?
5.What is your mother doing now?
1年前
2