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wearepleasedtolearnthatthatproblem(solve)hasbeensolvedatyesterday’smeeting为什么不是solved,这是什么语法,考什么知识点

题目详情
we are pleased to learn that that problem (solve) __has been solved ______ at yesterday’s meeting
为什么不是solved,这是什么语法,考什么知识点
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答案和解析
这句话有错,正确的句子应为:We are pleased to learn that that problem has been (solve)_________________ at yesterday's meeting.考问的是,填写正确的动词时态.你的问题很对,就应该是solved (现在完成被动时)....