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You should keep working hard ________ you have passed the exam.
A.ifB.becauseC.whenD.even though
2014·广东汕头·一模
知识点:becauseif (是否)when (当…时候)even thougheven if/even though引导让步状语从句从属连词辨析 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!