题目内容：
Paragraph 4_________A When you get up
B Where you stand while waiting to cross a road
C Where you walk
D Where you sit on a bus and how you travel
E When you go to bed
F When pollution levels rise and fall
参考答案：
答案解析：
单选题：Paragraph 4_________A When you get upB Where you stand while
- 题目分类：综合类
- 题目类型：单选题
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A When you get up
B Where you stand while waiting to cross a road
C Where you walk
D Where you sit on a bus and how you travel
E When you go to bed
F When pollution levels rise and fall