14. He last saw his sister when she left for Japan.
15. She has worked as a secretary for 5 years.
16. I started studying E 6 years ago.
17. My uncle hasn't  smoked since 2001.
18. I have never read an interesting novel like that before.
19. My teacher is the most warm-hearted person I have ever known.
20. Jack has gone to Paris last week.
21. He has learned to drive since he was 18.
22. When did you start collecting stamps ?
23. He has backed from New York for 3 days there.
24. It has rained since last Friday.
35. After he has worked for many years, he retired.

14. He last saw his sister when she left for Japan.
15. She has worked as a secretary for 5 years.
16. I started studying E 6 years ago.
17. My uncle hasn't  smoked since 2001.
18. I have never read an interesting novel like that before.
19. My teacher is the most warm-hearted person I have ever known.
20. Jack has gone to Paris last week.

Dịch

14. Anh ấy nhìn thấy em gái mình lần cuối khi cô ấy rời đi Nhật Bản.
15. Cô ấy đã làm thư ký trong 5 năm.
16. Tôi bắt đầu học E cách đây 6 năm.
17. Chú tôi đã không hút thuốc từ năm 2001.
18. Tôi chưa bao giờ đọc một cuốn tiểu thuyết thú vị như thế trước đây.
19. Cô giáo của tôi là người có trái tim ấm áp nhất mà tôi từng biết.
20. Jack đã đến Paris vào tuần trước.