Ответ:

1. Do you know any engineers at Machinoexport? No, I do not know any!

2. Does your office sell any goods to Great Britain? No, my office does not sell any goods to Great Britain! 

3. Do you buy any equipment from foreign firms? No, I do not buy any equipment from foreign firms!

4. Do any engineers of your office learn French? No, they do not! 

5. Did you have any English lessons  last week? Yes, I did have one! 

6. Are there any magazines on the shelf? Yes, there are many magazines on the shelf.

7. Have you any books about  Novgorod? Yes, I have some books about Novgorod.

8. Have you any English books at home? Yes, I have one English book at home.

9. Can you give me any magazines to read? Yes, I can give you!

10. Would you like some tea or milk? I would like tea.

11. Are there any things on the table? No, there are not!

12. Was there any mail from G? No, there was not!