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题型：单选题 题类：常考题 难易度：普通
新版牛津上海版（深圳用）六年级上册英语Unit 10 Air同步练习
一The smoke factories makes the air dirty．
Is it cold?
Where is your pencil box?{#blank#}1{#/blank#}
{#blank#}1{#/blank#} {#blank#}2{#/blank#}Lily{#blank#}3{#/blank#} {#blank#}4{#/blank#}?
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