Ex 10
Are Sara and Tom playing with the ball? (там опечатка - 2 раза "ball")
My nice friends are not living in a nice flat.
I am having a party on Sunday.
Are Sandy's brothers studying French at university?
Ex 11
(Oscar) Yes, he is.
(rabbit) No, he isn't.
(bees) No, they aren't.
(monkey) No, he isn't.
(woman) No, she isn't.
(I) No, I'm not.
(Nathan) No, he isn't.
(they) Yes, they are.
(baby) No, he isn't.