Recently I took part a geography research study group. Our topic   1. is environmental pollution and protection.We took a variety          2. of pictures showed the present pollution conditions of our city. To     3. our surprised, there are still a lot of people doing silly things to our    4. surroundings. Some people throw rubbish anywhere where they like;   5. somecars give off harmful gases and waste water are poured into the   6. riversby some factories. Worse still, people sometime have to make   7. themway through dusty winds as a result of the the pollution. Through   8. our research, we come to know that everybody must pay more attention  9. to our environment and some measure should be taken                10.