Every boy and girl______ not to swim in the lake, for it is polluted.

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问题 Every boy and girl______ not to swim in the lake, for it is polluted.

选项 A、has been warned
B、have been warned
C、has warned
D、have warned

答案A

解析 句子的主语every boy and girl(每一个男孩或者女孩)是单数形式,且它与句子谓语动词warn之间是动宾关系,所以应该用被动形式。故选A。
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本试题收录于: 英语题库普高专升本分类
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