问题
When did he work_______the railroad? —From 1904 to 1909.[ ]
A: in
B: on
C: at
D:of
B: on
C: at
D:of
正确答案是：
同类题型
______ I have a quick word with you? Something important has happened.
My brother doesn’t like English, so he listen to English news.
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The woman newsreader has gone to live abroad. She won’t appear on TV ______. [ ]
Are you pleased with the result of the math exam?—Not at all. I can’t have ______ one.