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题型：单选题 题类：常考题 难易度：普通
人教版（PEP）小学英语四年级下册Unit 4 At the farm单元测试
—________ cows.
例：I me my mine
{#blank#}1{#/blank#} {#blank#}2{#/blank#} find the {#blank#}3{#/blank#} {#blank#}4{#/blank#} in China.
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