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Thetrainshouldhavearrivedanhourago.Iwonderwhatcouldhavecausedthe.A.lateB.laterC.delayD.relay请问:iwonderwhatcouldhavecausedthedelay.怎么翻译?请问:couldhavecaused,couldhavedone不是译作本应该。(事

题目详情
The train should have arrived an hour ago.I wonder what could have caused the _ .
A.late B.later C.delay D.relay
请问:i wonder what could have caused the delay.怎么翻译?
请问:could have caused ,could have done 不是译作 本应该。(事实上并非如此)
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答案和解析
我想知道,是什么导致了Train的推迟