Only ________ according to the directions can the medicine be quite effective.A.takingB.takenC.being

题目简介

Only ________ according to the directions can the medicine be quite effective.A.takingB.takenC.being

题目详情

Only ________ according to the directions can the medicine be quite effective.
A.takingB.taken
C.being takenD.having been taken
题型:单选题难度:中档来源:不详

答案

B
选项动词的逻辑主语the medicine与动词take之间为被动关系,实际上相当于一个时间状语从句only when it is taken...结构,故应选taken在句中用作状语。

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