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题型：单选题 题类：常考题 难易度：普通
新目标（Go for it）版2016-2017学年初中英语八年级下册Unit 9 Have you ever been to a museum? 评估试题
Two {#blank#}1{#/blank#}of water {#blank#}2{#/blank#} polluted by people here last year.
{#blank#}1{#/blank#} of the students in our class {#blank#}2{#/blank#} to school.
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