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题型：单选题 题类： 难易度：普通
外研（新标准）版英语九年级上册Module 9 Great inventions Unit 2课时优化训练
He was once a big card {#blank#}1{#/blank#} {#blank#}2{#/blank#}.
The police came {#blank#}1{#/blank#} {#blank#}2{#/blank#} and saved the child.
That's why he takes study {#blank#}1{#/blank#} and studies {#blank#}2{#/blank#} in class.
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