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11. I have been working for the company for a year.
12. D.H Lawrence, the famous novelist, was born 100 years ago.
13. When did Catherine and Henry engage?  
14. I haven't seen him since I was a student.
15. Alan hasn't visited his parents for ages.
16. By the time he got to the station, the train had left.
17. It is ten years since the school was founded.
18. The office manager wondered why he hadn't got a computer before.

19. William accused Amanda of stealing his best cassette.
20. Magaret accused John of damaging her bicycle.

11.I have been working for the company for a year.
13.When did Catherine and Henry engage?  
14.I haven't seen him since I was a student.
15.Alan has not visited his parents for ages.
16.By the time he got to the station, the train had left.
17.It's 10 years since the school was founded.

18.The office manager wondered why he hadn't got a computer before.

Dịch]

11. Tôi đã làm việc cho công ty được một năm.
13. Catherine và Henry đính hôn khi nào?
14. Tôi đã không gặp anh ấy kể từ khi tôi còn là sinh viên.
15. Alan đã không đến thăm cha mẹ của mình trong nhiều năm.
16. Khi anh ấy đến ga, tàu đã rời bến.
17. Đã mười năm kể từ khi trường được thành lập.
18. Người quản lý văn phòng tự hỏi tại sao trước đây anh ta không có máy tính.