Answer:
1. She is a better driver than I am.
2. He can walk <u>MUCH</u> faster than me.
3. The old woman walked <u>THE</u> more slowly than her daughter did.
4. Mahrez is among the best football players in the world.
5. The longer he exercises, the <u>FAR</u> more tired he gets.
6. Ahmed is a <u>VERY</u> more efficient worker than Sami is.
7. He spends <u>THE</u> half as much money as his wife does.
8. She used to wear the same clothes as <u>WITH</u> her sister.
9. Lina can sing as well as a bird.
10. I can easily carry this bag. It‘s <u>SO</u> light as a feather.
11. My sister thinks she is <u>THE MOST</u> more intelligent than me, but I don't agree!
12. Avatar is <u>PROBABLY</u> the worst film I have seen!
13. What is the <u>MOVE </u>wettest month of the year in Algeria and where?
14. Do you think Harry Potter film is <u>MORE</u> better than the book?
15. Who is the most powerful person in your country?
16. Is Sid Ahmed Aghoumi <u>MOST</u> older than Athman Ariouat?
17. Chanez is nicest person <u>THAT</u> I know.
Explanation:
There are other grammar errors; however, the bold words need to be removed.