1. My father was **drive** to work when he saw an accident on the road.
   - **was driving**

2. Ngoc was dancing in her room while her brother **were** playing video games.
   - **was**

3. The volunteers made a meaningful **contribute** to the local orphanage.
   - **contribution**

4. Linda wishes she **has** a new smartphone and a new bike.
   - **had**

5. I want to **observation** the changing colours of the leaves in autumn.
   - **observe**

6. I was waiting for the bus when I **realise** I had forgotten my umbrella.
   - **realized** (or **realised**, depending on regional spelling)

7. We wish that our parents didn't **had** to work so hard.
   - **have**

8. Cultural **preserve** includes safeguarding intangible heritage like music and dance.
   - **preservation**

9. He **fixing** the car in the garage for weeks because it kept breaking down.
   - **has been fixing**

10. Minh and Quang are having a picnic in the garden **at 3 p.m. last Saturday**.
    - **at 3 p.m. last Saturday**

11. She **wish** she had a villa with a swimming pool and a beautiful garden.
    - **wishes**

12. We should **protected** valuable artefacts from being stolen or sold illegally.
    - **protect**

13. I wish I could **reading** minds and know what people are thinking.
    - **read**