john is doing his homework in his room.改为否定句
问题描述：
john is doing his homework in his room.改为否定句
They are planting trees on the hill.改为一般疑问句
I think you are right.改否定句
They are (playing volleyball)on the beach.对括号里的内容提问
The white dog is (running after me.)对括号里的内容
答
John isn't doing his homework in his room.What are They planting trees on the hill?I don't think you are right.What're they doing?What's the white dog doing?最好加激愤,很累的~~.``