2. 外语
  3. A. make new materials B. preserve wetland and animals C. have clean air D. have clean water E. collect cigarette butts F. collec

A. make new materials B. preserve wetland and animals C. have clean air D. have clean water E. collect cigarette butts F. collec

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问题 A. make new materials
B. preserve wetland and animals
C. have clean air
D. have clean water
E. collect cigarette butts
F. collect disposed oil
Ryan, with the help of others, is fulfilling his dream of helping African people to______.
选项
答案D
解析 根据第四段第一句及最后一句可知，Ryan的梦想是让非洲国家的人喝上洁净的饮用水。
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