Here are the matched questions and responses based on the given options:

1. **What’s your name?**
- **B. My name is Nga.** (1)

2. **Is this our art room?**
- **D. No, it isn’t.** (2)

3. **What’s your hobby?**
- **A. It’s painting.** (3)

4. **What colour are your school bags?**
- **E. They are blue.** (4)

5. **What’s this?**
- **C. It’s a face.** (5)

So the completed matches would be:
- 1 - B
- 2 - D
- 3 - A
- 4 - E
- 5 - C