Every___been tried since then.A.mean has B.mean have C.means has D.means have
问题描述：
Every___been tried since then.A.mean has B.mean have C.means has D.means have
答
D.means have means是方法的意思
答
C
means 方式 单数
答
means 【音标】：[mi:nz] 【词典解释】：名词 n. 1. 手段,方法;工具
所以,应该选C
从那时起,每一种方法都被尝试过了.