问题
选择题
— Have you found your English book? — I am not sure ____ I could have left it.
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答案
A
主要测试宾语从句。译文：---你已经找到你的英语书了吗？---我没有把握把它放哪儿了。
搜题请搜索小程序“爱下问搜题”
— Have you found your English book? — I am not sure ____ I could have left it.
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