3/ Driving fast is very dangerous. 
4/ Many people very prefer live in the country. 
5/ There are always traffic jams during rush hours. 
1/ People should use more solar energy because it is cheap unlimited, cheap and clean. 
2/ Although my aunt is poor, she lives happily.

1. People should use more solar energy because it is cheap, unlimited, and clean. 
5. There are always traffic jams during rush hours.
2. Although my aunt is poor, she lives happily.
4. Many people very prefer to live in the country. 
3. Driving fast is very dangerous.