` 2`. I bought it yesterday

` 3`. I came here two years ago

` 4`. I did it last night

` 5`. I paid it in June.

` 6`. I broke the window a week ago

` @` Quá khứ đơn :

` (+)` S + V-ed/V2 + ...

` (-)` S + didn't + V-inf + ...

` (?)` Did + S + V-inf + ...?

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

` 1`. was playing

` 2`. was sleeping/was listening

` 3`. was standing

` 4`. was working/was leaving

` 5`. Were/having

` 6`. was running

` 7`. was/going

` 8`. were watching

` @` Quá khứ tiếp diễn :

` (+)` S + was/were + V-ing +...

` (-)` S + was/were + not + V-ing + ...

` (?)` Was/were + S + V-ing + ...?

2. Hình không rõ

3. I came here 2 years ago

4. I did it last night

5. I had it in June

6. I broke the window a week ago

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

1. was playing

2. was sleeping / was listening

3. was standing

4. was working / was leaving

5. Were - having

6. was running

7. was - going

8. were watching