They often arrange birthday parties, don't they? -Yes, they do.
2) Denis reads a lot about animals and birds, isn't he? -Yes, he is.
3) The London Tower is a well-known museum, isn't it? -Yes, it is.
4) My parents are engineers, aren't they? -Yes, they are.
5) They will visit Buckinham Palace tomorrow, won't they? -Yes,they will.
6) Alice arranged a wonderful party last week, didn't she? -Yes, she did.
7) They wrote an interesting letter to their pen friendsyesterday, didn't they? - Yes, they did.
8)Tom was upset yesterday, wasn't he? -Yes, he was.
9) Tom and Gween were in the library happy, weren't they? -Yes, they were.
10) They have never been to London, have they? - No,they haven't.