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The old professor worked many hours a day he became seriously ill.

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2 | 2012-7-10 06:24:14 | 显示全部楼层 |阅读模式

这个题目我以前见过。你漏了 D 正确答案是 D——untilThe old professor worked many hours a day (until) he became seriously ill. 年纪较大的教授天天都会工作很多小时，直到他得了重病。有什么问题请追问、希望及时采纳—— ? 多谢 ⌒_⌒...

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