Công thức thì QKĐ (V: thường)

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...

-------------------------------------------------

1. ate

DHNB: yesterday 

2. bought 

DHNB: last week 

3. did you get up 

DHNB: this morning 

4. flew

DHNB: in 1903

5. caught 

DHNB: last week 

6. remembered 

DHNB: ago 

7. did they play 

DHNB: last week 

8. did Hoa try 

DHNB: yesterday 

9. did they stop 

DHNB: last Sunday 

10. didn't buy 

DHNB: yesterday 

11. didn't talk 

DHNB: last year 

12. Did they come 

DHNB: yesterday 

13. didn't close 

DHNB: yesterday 

14. didn't have 

15. did you leave 

DHNB: yesterday 

`color{orange}{~MiaMB~}`