Upon arriving home the girl discovered that she ______ (leave) her bag at her fr

游客2023-09-18  28

问题 Upon arriving home the girl discovered that she ______ (leave) her bag at her friend’s.

选项

答案 had left

解析 本题考查动词的时态。分析句子结构可知,that引导宾语从句,说明discover的具体内容。而谓语动词discovered是一般过去时,从句部分谓语动词leave(her bag)发生在discover这一动作之前,因此从句谓语动词应该用过去完成时(had done),此处应填had left。
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