I ___at the station half an hour ago ,but now the train ___yet.A.arrived;hadn't comeB.was arriving;hadn't come C.arrived;hasn't come D.had arrived;didn't come 我知道正解是C,但为什么不能选B呢,“half an hour ago”不是过去的一个
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![I ___at the station half an hour ago ,but now the train ___yet.A.arrived;hadn't comeB.was arriving;hadn't come C.arrived;hasn't come D.had arrived;didn't come 我知道正解是C,但为什么不能选B呢,“half an hour ago”不是过去的一个](/uploads/image/z/9555157-37-7.jpg?t=I+___at+the+station+half+an+hour+ago+%2Cbut+now+the+train+___yet.A.arrived%3Bhadn%27t+comeB.was+arriving%3Bhadn%27t+come+C.arrived%3Bhasn%27t+come+D.had+arrived%3Bdidn%27t+come+%E6%88%91%E7%9F%A5%E9%81%93%E6%AD%A3%E8%A7%A3%E6%98%AFC%2C%E4%BD%86%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E8%83%BD%E9%80%89B%E5%91%A2%2C%E2%80%9Chalf+an+hour+ago%E2%80%9D%E4%B8%8D%E6%98%AF%E8%BF%87%E5%8E%BB%E7%9A%84%E4%B8%80%E4%B8%AA)
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