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题型：语法填空（单句） 题类： 难易度：普通
牛津版（深圳•广州）英语八年级上册Unit 2 Numbers 第3课时grammar训练案
Seven {#blank#}1{#/blank#} (twelve) of the students have taken part in the tree-planting activity since Monday.
reply empty as soon as twelve simply
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