We must do everything we can waste water from running into rivers ( )A．preventB．preventedC．preventingD．to prevent 题目和参考答案——青夏教育精英家教网—

题目内容

17．We must do everything we can waste water from running into rivers （　　）

A．

prevent

B．

prevented

C．

preventing

D．

to prevent

分析我们必须做我们所能做的一切事情来阻止废水排入江河之中．

解答答案：D．句子中的we can是一个前面省略了关系代词that，后面省略了do的定语从句，修饰先行词everything，不定式to prevent…from．是作do everything的目的状语．故答案为D．

点评本题考察考生对定语从句、不定式的掌握情况，只有了解句子的结构才能正确作答．

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完形填空

阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。

There's always hope

I was sitting around the other morning thinking about some of my former (以前的) students． When I do that, my thoughts always turn to Vincent．

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