Sure! Let's look at the words in each question and identify which one has a differently pronounced underlined part.

1. A. **tables** (s) B. **lights** (ts) C. **villas** (z) D. **windows** (z)
- The answer is **B. lights** because the "gh" is pronounced /ts/, while the others have a /s/ or /z/ sound.

2. A. **fridges** (z) B. **books** (s) C. **streets** (s) D. **lamps** (s)
- The answer is **A. fridges** because the "es" at the end is pronounced /z/, while the others are /s/.

3. A. **houses** (z) B. **glasses** (z) C. **desks** (s) D. **dishes** (z)
- The answer is **C. desks** because it has a /s/ sound, while the others have a /z/ sound.

4. A. **gardens** (z) B. **beds** (z) C. **vases** (z) D. **halls** (s)
- The answer is **D. halls** because it has a /s/ sound, while the others have a /z/ sound.

5. A. **rulers** (z) B. **pencils** (s) C. **bags** (z) D. **books** (s)
- The answer is **A. rulers** because the "es" at the end is pronounced /z/, while **pencils** and **books** have a /s/ sound and **bags** is also /z/.

So summarizing the answers:
1. B. lights
2. A. fridges
3. C. desks
4. D. halls
5. B. pencils