giúo mik bài này vs!

14. I last saw him when I was a student.

⇒ I haven't seen him since I was a student.

15. It is ages since Alan visited his parents.

⇒ Alan hasn't visited his parents for ages.

16. The train left before he got to the station.

⇒ By the time he got to the station, the train had left.

17. The school was founded ten years ago.

⇒ It is ten years since the school was founded.

18. "Why didn't I get a computer before? “ thought the office manager.

⇒ The office manager wondere why he hadn't got a computer before.

19. “You stole my best cassette, Amanda!” said William.

⇒ William accused Amanda of stealing his best cassette.

20. ''You damaged my bicycle, John!'' Said Margaret.

⇒ Margaret accused John of damaging her bicycle.