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题型:语法填空(单句) 题类: 难易度:普通
外研版(2019)必修 第三册Unit 1 Knowing me Knowing you Grammar过去分词做状语易错题精练
In April, 2009, President Hu inspected the warships in Qingdao, ______ the 60th anniversary of the founding of the PLA Navy.
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