1.We have learnt English for 4 years.
we started to learn english 4 years ago
2. Ly's father started to give up smoking last year
-> ly's father has not smoked since last year.
3. The editor hasn't written to Mai for a month
-> the editor last wrote to Mai a month.
4. How long have you learnt Spanish
-> how long ago did you start to learn French?
5.They finished their exercises on time yesterday
-> Their exercises were finished on time yesterday.
6. A friend sold me a rock concert ticket last week.
-> a rock concert ticket was sold for me by a friend last week.
7. The dentist took out one of my teeth three days ago
-> one of my teeth was taken out by the dentist three days ago.
Bài này mk làm rồi, yên tâm nha, xin hay nhất!