Dưới đây là cách viết lại những câu trong ảnh:

1. **The lessons made them work very hard.**
- They found the lessons challenging.

2. **I am sorry I didn’t succeed in finding the solution.**
- I apologize for not being able to find the solution.

3. **His behavior sometimes surprised everyone.**
- Everyone was sometimes surprised by his behavior.

4. **The girl took the gold pen by mistake.**
- The girl didn’t mean to take the gold pen.

5. **Several contestants withdrew from the final round.**
- Only a few contestants remained from the final round.