Most of these sentences contain common errors. Identify and correct.
1. The city has spent a big amount of money on crime prevention.
2. A number of cities has more than ten million inhabitants.
3. A large proportion of people commute to work by car.
4. The major cities have a large level of unemployment.
5. A number of surveys has been carried out.
6. Only a small percentage of the houses has electricity.
7. The number of private cars is increasing rapidly.
8. People are now enjoying a higher level of living.
9. The food supply is not proportion about the size of the country.
10. Comparing with other countries, Libya spends a high percentage of income on education.

Nhờ mọi người làm bài tập trên giúp em là tìm lỗi sai và sau đó sửa lại, giải thích kĩ giúp em tại sao chỗ đó lại sai ạ, xong dịch giúp em ra tiếng Việt nghĩa của 10 câu trên luôn ạ, em cảm ơn nhiều ạ.