Sure! Here are the answers based on the images provided:

### Ex 14: Look and write the answers.
1. What did your family do in Nha Trang Beach last week?
**They went swimming and sunbathing.**

2. What did your brother do on the beach yesterday?
**He built sandcastles.**

3. What did your family do at Lang Co Beach last summer?
**They had a picnic and played games.**

4. What did your family do in Ha Long last week?
**They took a boat tour and enjoyed the scenery.**

5. What did you do in Quang Binh last year?
**I visited caves and enjoyed nature.**

### Ex 15: Choose the best answer.
1. Did you **listen** to music yesterday? Yes, I did.
**a. listen**

2. **Where** did you go last summer holiday? I went to Da Nang.
**c. Where**

3. My brother **played** football with his friends yesterday.
**d. played**

4. We **bought** many souvenirs last summer.
**a. bought**

5. Did your brother take lots of photos in Ha Long Bay?
**c. Yes, he does.**

Feel free to ask if you need anything else!