The old professor worked many hours a day he became seriously ill.
问题描述：
The old professor worked many hours a day he became seriously ill.
The old professor worked many hours a day he became seriously ill.
A.although B.even if C.though
答
这个题目我以前见过.你漏了 D正确答案是 D——until The 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...