It remains______ whether the medicine has side effect. A.seeingB.to seeC.seenD.to be seen-英语

题目简介

It remains______ whether the medicine has side effect. A.seeingB.to seeC.seenD.to be seen-英语

题目详情

It remains______ whether the medicine has side effect.
A.seeingB.to seeC.seenD.to be seen
题型:单选题难度:偏易来源:不详

答案

D

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