[视听材料] 大学英语六级考试专项练习（词汇与语法） 语法, 词汇, 六级

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大学英语六级考试专项练习（词汇与语法）
Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). Choose the ONE that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center.