`1.` took 

`->` stopped

`=>` QKĐ

`2.` wasn't

didn't enjoy

`3.` wasn't 

`4.` didn't have 

`5.` didn't laugh.

`6.` ate

`->` Bất quy tắc của eat 

`7.` didn't sleep 

`8.` were 

`9.` flew 

`->` Bất quy tắc của fly 

`10.` turned 

`->` S + V_ed/V_2 

`=>` Ta có công thức QKĐ như sau:

ĐTT: `(+)` S + V2/ed +…

`(-)` S + did not (didn't) + V_0

`(?)` Did + S + V_0?

1/ It stopped raining, so I took off my raincoat. (take)

2/ The novel wasn’t very interesting. I didn't enjoy it very much. (enjoy).

3/ We went to Kate’s house but she wasn't at home. (be)

4/ She was in a hurry, so she didn't have time to phone you. (have)

5/ The story was very funny but nobody didn't laugh. (laugh)

6/ Tom was very hungry. He ate like a horse. (eat)
7/ The room was so cold, therefore we didn't sleep well. (sleep)

8/ It was hard work carrying the bags. They were very heavy. (be)

9/ The window was open and a bird flown into the room. (fly)

10/ It was very hot, so I turned on the air-conditioner. (turn)