1. Susan isn't as good at English as Tim.

2. It took us five hours to get to London.

3. He enjoys listening to music.

4. Her younger sister isn't as beautiful as she. hoặc her younger sister is uglier than she.

5. They have studied English since 2004.

6. You ought to go to school now.

-> It's time for you to go to school now.

7. My father works as a teacher at a high school.

-> My father is a teacher at a high school.

8. We can't afford to buy the car.

-> The car is too expensive for us to buy.

9. People say that he beats his wife.

-> He is said to beat his wife.

10. She bought that house in 1990.

-> She has bought that house since 1990.