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题型：单选题 题类：常考题 难易度：普通
高中英语人教版必修五Unit 4 Making the news同步练习 (2)
—Not until ________ good preparations for it.
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} the earthquake that the UN sent medical supplies to the area.
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