what s Tom doing?回答

what s Tom doing?回答 what's tom doing什么意思如何回答? What's Tom(doing) 为啥用doing不用doesing tom,what's your mother doing?------------oh she is busy_____ what’s the matter?what needs doing?用英语回答 what is tom doing tomorrow?怎么回答 （Tom在踢足球） What's Tom's father doing?____ a,she' reading b,He's reading What is Mike's sister doing?怎么回答 What's your sister doing now?回答语是什么? —What"s Tom doing?-----He"s 英语怎么写?to What are you doing here?It's for Tom.We agreed____here bur s what's up?what's new,how are you doing?的区别和分别得回答