1. Can she jump , can't she ? 2. they must do theirs homework , musn't they ? 3. She could write it , couldn't she ? 4.They couldn't do it , could they ? 5.He musn't smoke in publick places , must he ? 6.you can't fly , can you ? 7. she must take book with you , musn't she ? 8.he can't plant the flower , can he ?