1)Do his friend's parents work in a hospital?
Yes, they do.No, they don't.
2) Was the boys' grandmother a dentist?
Yes, she was.No, she wasn't.
3)CanTed and Nick's sister make coffee?
.Yes, she can. No, she can't.
4) Must Kate's pet eat much meat?
Yes, it must.
5) Could his friend's sister play the game?
Yes, she could.