12. A. Ken has been working for that company for 2 years.
13. A. This is the first time I have seen such an interesting film.
14. B. It's the first time she has drunk coca-cola.
15. B. After he had done morning exercises, he had breakfast.
16. B. This is the first time I have read a good book.
17. C. After we had had lunch, we went for a walk.
18. D. B&C are correct
19. D. B&C are correct
20. B. This novel is the best I have ever read.
21. A. They've ever had such a cold winter.
22. D. A&C are correct
