摘要： Bob never does his homework Mary. He makes lots of mistakes. A. so careful as B. as carefully as C. carefully as D. as careful as [解析]答案:B.该提考查的是形容词和副词的用法区别.空白处所缺的词是修饰动词短语does his homework的.应该用副词.另外.表示“某人做事不如某人细心 应用“not as carefully as 这样的结构.

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