Correct the error in each sentence.

1.We live in the centre of town, don`t we?  разделительные
Do we live in the centre of town?  общий
Do we live in the centre of town or village?  альтернативный
Who lives in the centre of town? к подлежащему
Where do we live?  специальный

2.She prefers a residential area, doesn`t she?  раздел
Does she prefer a residential area?  общ
Does she prefer a residential or noisy area?  альт
Who prefers a residential area? к подлеж
Where does she prefer a residential area?  спец

3.His parents bought a terraced house 5 years ago, didn`t they?  раздел
Did his parents buy a terraced house 5 years ago? общий
Did his parents buy a terraced house 5 or 10 years ago?  альт
Who bought a terraced house 5 years ago?  к подл
When did his parents buy a terraced house? спец

1) I would be happy to accept your invitation. I was always looking forward to participate in the exhibition.
2) I will response your invitation on conference. Can you submit your materials, consideration and comment? Your earliest response would be appreciated.
3) I very much regret I can't accept the invitation. Attend to talk, since next month it comes the middle of the academic semester and i have lectures to present.
4) I regret I cannot accept your kind invitation. I hope i'll be able to visit you some times in the future.