1 Jack ( collect ) coins when he was a little boy

2 Mr.dass ( leave ) for new york late last night

3 ...you ( attend,.) The extra class last night

Công thức thì QKĐ (V: to be)

(+) S + was/were + ... 

(-) S + was/were + not ... 

(?) Was/Were + S ... ? 

S số ít, I, he, she, it + was

S số nhiều, you, we ,they + were

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, ...

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

7. collected

8. left 

DHNB: last night 

9. Did you attend

DHNB: last night 

10. Was 

DHNB: yesterday evening 

`color{orange}{~LeAiFuRuiHuiBao~}`