1. He studies harder than his sister.

2. The boy ran faster than any other boy in the 100-meter race.

3. She did better than he.

4. I am listening more carefully than my classmates.

5. We danced more happily than them.

6. My grandmother eats more heathily than us.

7. It is raining more and more heavily.

8. He jumped higher then me.

9. The teacher can work out the problem more easily than the others.

10. The wind is blowing more strongly.