I

1.was

2.was

3.were

4.were

5.wasn't

6.wasn't

7.wasn't

8.weren't

9.wasn't

10.Was / wasn't

11.Was

12.were

13.Were/was

14.was

15.was

II

1.went

2.played

3.ate

4.took

5.had

6.didn't buy

7.didn't talk

8.didn't come

9.didn't close

10.didn't return

11.didn't eat

12.didn't go

13.didn't take

14.didn't have

15.were

16.played

17.tried

18.talked

19.stopped

20.wore

III

1.stayed

2.went

3.had

4.was

5.visited

6.were

7.bought

8.saw

9.ate

10.talked

11.returned

12.thinked

13.went

14.drove

15.arrived

16.asked

17.said

18.told

19.walked

20.saw

21.stopped/bought

22.was

23.didn't go

24.got

25.did/did

26.loved

27.got/had

IV

1.d

2.d

3.d

4.d

5. c

6.c

7.d

8.c

9.c

10.c

V

was

got

did

took

combed

had

ate

drunk

helped

brushed

putted

went

had

returned

did 

ate

took

was

came

went

1.sunday.

2.six.

3.he helpped Mom clean the table.

4.grandparents.

5.6.30

6.ten o'clock.

VI

1.I went swimming yesterday.

2.Mrs.Nhung washed the dishes.

3.My mother went shopping with her friends in the park.

4.Lan cooked the chicken noodles for dinner.

5.Nam and I studied hard last weekend.

6.My father played golf yesterday.

7.Last night Phong listened to music for two hours.