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Ifortheschoolbuswhenitbegantorain.A.hadwaitB.waitedC.waswaitingD.havewaited

题目详情
I ____for the school bus when it began to rain.
A.had wait B.waited C.was waiting D.have waited
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答案和解析
I _C_for the school bus when it began to rain.
A.had wait B.waited C.was waiting D.have waited
当我正在等校车时下雨了
过去进行时.