问题补充：
on time, this medicine will be quite effective.
A. Taking
B. Being taken
C. Taken
D. Having taken
答案：
A. Taking
B. Being taken
(答案→)C. Taken
D. Having taken
解析：this medicine 与动词take 为被动关系，故用过去分词。
如果觉得《on time this medicine will be quite effective.A. TakingB. Being takenC. TakenD. Having t》对你有帮助，请点赞、收藏，并留下你的观点哦！
