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找出正确的选项
他虽然努力了，但考试未能及格。
As he tried hard, he did not pass the examination．
Hard although he tried, he did not pass the examination．
Hard as he tried, he did not pass the examination．
选择翻译正确的句子
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A．As he tried hard, he did not pass the examination.
B．Hard although he tried, he did not pass the examination.
C．Hard as he tried, he did not pass the examination.