1. my mother taught me to ski

2. my father used to play basketball

3. amanda, whose father is a dentist, told us she has just moved out

đây là bài nghe màa ㅋㅋ

b

d

11. c

12. d

13. d

14. c

15. c

16. b

17. a

18. a

19. b

20. c

1. b

2. c

3. c

4. d

5. b

6. b

7. a

8. d

9. a

10. a

19. b

20. c

21. a

22. c

23. a

1. have/eaten

2. hasn't come

3. have worked

4. have/been

5. haven't done

6. have just seen/has/done

7. have/decided

8. has been

9. hasn't had

10. hasn't played

11. haven't had

12. haven't seen

13. have/realized

14. have gone

15. have/known

16. have/taken

17. has eaten

18. has lived

19. has lost

20. hasn't started

x - 5 = 0

x = 0 + 5

x = 5

⇔ x ∈ {5;7}

d

past simple : (w/h) + do/does + s + vo ?

how often : chỉ mức độ thường xuyên