$#min$

2. Did you go shopping with a friend?

- No, I didn't
3. What did you do in the afternoon?

- I watched TV
4. Did you call a friend?

- No, I didn't
5. Where did you go on Sunday?

- I went to the park
6. Did you stay at home?

- Yes, I did
7. Did you do any homework?

- No, I didn't
8. What time did you go to bed?

- I did to bed at 11pm.

2. Did you go shopping with a friend ?

`->` Yes, I did

3. What did you do in the afternoon ?

`->` I played football with my friends in the afternoon.

4. Did a friend call you ?

`->` Yes, she did

5. Where did you go on Sundays ?

`->` I went to the supermaket on Sundays.

6. Did you stay at home ?

`->` No, I didn't

7. Did you do any homework ?

`->` Yes, I did

8. What time did you go to bed ?

`->` I went to bed at 10pm.

Quá khứ đơn:

+) S + V2/ed

-) S + did + not + Vinf 

?) Did + S + Vinf ?

`->` Yes, S + did / No, S + didn't