Giải thích cách làm giùm mình với ạ, ko cần làm cho mình công thức là đc
1. I last went shopping two months ago. (BEEN) I ... two months.
2.Our last holiday was in Greece. (TO) We ... our last holiday.
3. I've been here for two hours, and I'm still waiting. (WAITING) I ... two hours.
4. I haven't seen him for ages. (SINCE) It's ... seen him.
5. The burglar escaped before the police arrived. (HAD) When the police ... escaped.
6. Fred fell off a ladder while painting a wall. (WAS) While ..., he fell off a ladder.
7. The workmen finished, and then Mr Jenkins came home. (WHEN) The workmen ... came home.
8. Evie made an appointment, and went to see the doctor. (MAKING) Evie went to ... an appointment.
9. First he booked the hall, and then he invited everybody. (BEFORE) He booked the hall ... everybody.
10. I walked home in heavy rain. (AS) It ... I walked home.