What is Tom doing?应该怎样回答

Tom is reading the book now
汤姆在看书
Tom is cleaning his room
汤姆正在打扫他的房间
Tom is speaking with his classmate on the phone
汤姆正在和他的同学打电话.

如果在看电视就说.
He is watching TV.

Tom is playing basketball

Tom is asking question on zhidao.baidu.com.