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单项选择 适中0.65 引用1 组卷243
I used to be afraid to speak in front of public before, but recently I _____ a lot.
A.have improvedB.improved
C.will improveD.am improving
2014·北京昌平·二模
知识点:improve表示影响(动作已完成) 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!