◎ 题干
—When the hero was _______, he was killed by his enemy.
—What a pity.
[     ]
A. in his fifty
B. on his fifty
C. on his fifties
D. in his fifties
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—When the hero was _______, he was killed by his enemy.—What a pity. [ ]A. in his fifty B. on his fifty C. on his fifties D. in his fifties …”主要考查了你对  【介词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。