题目

（2011·广西桂林中学第一次月考） —What did the doctor say? — He said, “     on time, this medicine will be quite effective”. A. Taking    B. Take        C. Taken          D. Being taken 答案：C考查过去分词及条件状语从句的省略。原句可改为：If it is taken on time, this medicine will be quite effective.

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