BythetimeIgottoschool,Ireali

发布时间:2020-07-28 06:13:46

By the time I got to school, I realized I ________ my backpack at home.A.leftB.had leftC.was leavingD.had forgotten

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B解析根据句意可知,所填的动词应是发生在get to school和forget之前,应用过去完成时;“把某物忘在家里”应用leave,不能用forget。
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