Since 1970,millions of enthusiasts____Vitamin C,which they believe can remedy the common cold.A.have been taken B.have been taking

分类: 作业答案 • 2021-12-20 02:29:33

问题描述：

Since 1970,millions of enthusiasts____Vitamin C,which they believe can remedy the common cold.
A.have been taken B.have been taking

答