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 e to know that everybody must pay more attention 9.
to our environment and some measure should be taken 10. 1. part 后面加in
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(答案→)1. part 后面加in
解析：
1. take part in “参加”是固定词组
2. 这里应该用过去时态
3. 在这里应该用ving形式作pictures 的定语
4. to one’s +抽象名词 “令某人…”
5. anywhere后面用that连接
6. 主语是waste water 不是harmful gases and waste water，必须注意分析句子结构
7. sometimes，有时
8. make one’s way 前进，进展
9. 正确
10. 应该是复数形式