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.
Every___been tried since then.A.mean has B.mean have C.means has D.means have
Every___been tried since then.A.mean has B.mean have C.means has D.means have
英语人气：878 ℃时间：2020-03-29 06:53:02
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