Helen________herkeysintheoffic

发布时间：2020-07-28 13:07:29

Helen ________ her keys in the office so she had to wart until her husband ________ home．（NMET' 96．17）A.has left；esB.left；had eC.had left；cameD.had left；would e

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C解析第椄隹湛捎珊竺娴—had to来确定用过去完成时态，第二个空属从句，也由had to 确定用过去时。
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