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填空题

Using the information in the text, complete each sentence 14-18 with an expression from the list below. For each sentence(14-18), mark one letter(A-G)on the Answer Sheet. Do not mark any letter twice. A. build a sand dam B. fetch water C. maintain them D. drink contaminated water E. install the pump F. have a tap with safe water G. do other meaningful things

Nearly 900 million people in the world have to ______.
【参考答案】

正确答案：D

相关考题

填空题 Women in the village of Foro have to climb up and down the mountains to ______.

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