【题目】 If you ________ the medicine yesterday, you ________ well now.
A. took, might be B. had taken, might have been
C. had taken, might be D. took, might have been
在线课程【答案】C
【解析】
试题分析：考查虚拟语气。本句条件句中时间状语是yesterday，这是一个过去时间，所以从句中使用“过去完成时”表示与过去相反，主句的时间状语是now，说明主句与现在事实相反，所以主句使用“情态动词+动词原形”。句意：如果昨天你服药了，现在你就会很好。故C正确。