5 doesn't work
6 aren't eating
7 don't help
8 Is he playing now? Yes, he is.
9 Does your friend go to school? No, he doesn't.
10 Are the children eating...? Yes, they are.
11 Does Kate sing well? No,she doesn't.
12 When do you usually come...?
13 What are you reading..?
14 What is your sister doing..?
15 Where does John live?
16 Who is playing....?
17 Who sings..?