A
1.They have been to Greece,haven't they?
2.You have already done your homework,haven't you?
3.We haven't locked the door,have we?
4.He hasn't helped you,has he?
5.She hasn't been abroad,has she?
6.You haven't passed the exam,have you?
7.They haven't eaten this meal,have they?
B
1.She can sing well,can't she?
2.They must go to school,mustn't they?
3.She could swim,couldn't she?
4.You couldn't visit your grandma,could you?
5.He mustn't break the rules,must he?
6.You can't play football,can you?
7.She must study hard,mustn't she?
8.He can dance excellently,can't he?