Sure, here are the verbs in the past simple or past continuous tense:

1. I **was** tired because I **was working** all day yesterday.
2. Last Saturday I **played** football in the school playground.
3. What **were** you **doing** at this time yesterday?
4. Nam often **went** swimming with his friends when he was young.
5. It started raining while I **was driving** to work.
6. **Did** you **go** to the cinema last night?
7. I **did not call** you at 1 o'clock as arranged because I was having a meeting.
8. I **was still sleeping** when my husband left for work this morning.
9. The bell **rang** while Lan **was taking** a bath.
10. While my father **was reading** newspapers, I **was listening** to music and my little brother **was doing** his homework.
11. When we **were crossing** the street, we **saw** an accident.
12. Hung **was having** breakfast when I **arrived** at his house this morning.