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题型：单选题 题类：常考题 难易度：普通
新版-牛津译林版2018-2019学年小学英语四年级上册Unit 1 I like dogs 第一课时同步练习
—Yes, I .
—Yes, I have.
—No, they {#blank#}2{#/blank#}(are, aren't). They're {#blank#}3{#/blank#}(in, on) the door.
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