10. liked (when I was a child: khi tôi còn bé, tức là ở quá khứ)

11. left (three hours ago)

12. didn't go (last Sunday evening)

13. taught (five years ago)

14. was (yesterday)

15. took (yesterday)

16. introduced (in 1876)

17. did you spend (last year)

18. occured (in 2011)

19. used to smoke (5 years ago)

20. didn't use to ride (when they lived in the countryside)

21. Did she buy (last Sunday)

22. could speak (Câu điều kiện loại 2)

23. could speak (Câu điều kiện loại 2)

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Tất cả được dùng ở thì quá khứ đơn nhé

Đáp án:

11, left

12, didn't go

13, taught

14, was

15, took

16, introduced

17, did you spend

18, occured

19, used to smoke

20, didn't used to ride

21, Did she buy

22, could speak

Dấu hiệu: Ảnh