1. They have to study English, don't they?

2. Sam doesn't use the computer in writing, does he?

3. Sara used to play with her friends, didn't she?

4. This is a new restaurant, isn't it?

5. These pictures aren't very old, are they?

6. Children enjoy drawing,don't they?

7. Let's go swimming,shall we?

8. My mother bought a new coat, didn't she?