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题型：选词填空（单句） 题类：常考题 难易度：普通
初中英语新概念英语2【一课一练】八年级上册Lesson 43 Over the South Pole飞越南极
(could finally/were finally able to)
David {#blank#}1{#/blank#} the answer to the question. He needs to think about it for a while.
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