1、His student is having dinner now（改复数句） 2、His keys are on the sofa （改一般疑问句做简短肯定、否定回答） 3、people play basketball at school（对atschool提问）

His students are having dinner now
Are his keys on the sofa? Yes,they are;No,they aren't.
Where do people play basketball?

1、their students are having dinner now.
2、Are his keys on the sofa?
Yes.they are.
No,they are not.
3、where do people play badketball?

1.Their students are having dinner now.
2.Are his keys on the sofa
肯定回答：Yes,they are.
否定回答：No,they aren't.
3.Where do people play basketball
不明白的再问哟,请及时采纳,多谢!

his students are having dinner now.
are his keys on the sofa
yes, they are
no, they aren't
where is the place people play basketball
望采纳