题目

To master a foreign language,______.           A. a lot of practice is needed     B. it needs a lot of practice           C. practice is in need of  D. one needs a lot of practice 答案：D 解析: 不定式常修饰动词状语，表示行为的目的、结果、原因等。for+动名词一般不做目的状语，但for+名词化了的动名词可作原因状语

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