**Exercise 1: Choose the word whose underlined part is pronounced differently from the others.**
1. **A. laugh** B. cough C. bought D. tough
- *Different sound: A (laugh)*

2. A. **game** B. gym C. girl D. bag
- *Different sound: A (game)*

3. A. calorie B. **labour** C. community D. volunteer
- *Different sound: B (labour)*

4. A. environmental B. **benefit** C. service D. sick
- *Different sound: B (benefit)*

5. A. danced B. helped C. watched D. **enjoyed**
- *Different sound: D (enjoyed)*

---

**Exercise 2: Choose the odd one out.**
1. A. flu B. cough C. headache D. **hobby**
- *Odd one out: D (hobby)*

2. A. gymnastics B. **stamps** C. books D. dolls
- *Odd one out: B (stamps)*

3. A. elderly people B. donors C. **disabled people** D. sick children
- *Odd one out: B (donors)*

4. A. fresh fish B. fruit C. **junk food** D. vegetables
- *Odd one out: C (junk food)*

5. A. service B. non-profit C. charitable D. **homeless**
- *Odd one out: D (homeless)*