Help me, please!!!!!!

1. were you doing

2. Were you having

3. invited

4. tried

5. didn't know

6. were waiting

7. was speaking

8. finished

9. just looked

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Thì QKĐ :

-Động từ thường :

(+) S + Ved/V2 + O

(- ) S + didn't + Vinf + O

(? ) Did + S + Vinf + O ?

- Tobe :

(+) S + was/were + O

(- ) S + was/were + not + O

(? ) Was/were + S + O ?

Thì Quá Khứ Tiếp Diễn:

(+) S + was / were + Ving + O

(-) S + was / were + not + Ving + O

(?)Was / Were+ S + Ving + O

`1` were you doing `2` Were you having

Có at 2a.m this morning `->` thì QKTD 

`3` invited 

`-` Diễn tả việc đã xảy ra trong QK dùng QKD 

`4` tried ( QKD)

`5` didn't know ( QKD ) 

`6` were waiting 

`-` Diễn tả về việc đang xảy ra trong quá khứ dùng QKTD 

`7` Was speaking ( QKTD) 

`8` finished 

`-` about half an hour ago `->` thì QKD 

`9` just looked ( QKD ) 

`**` Thì QKD : 

`(+)` S + Ved/V2 + O 

`(-)` S + didn't + V + O 

`(?)` Did + S + V + O ? 

`**` Thì QKTD: 

`(+)` S + was/were+ Ving + O

`(-)` S + was/were+not + Ving + O

`(?) `Was/were+ S + Ving + O?