题目内容
— Have you found your English book?
— I am not sure ____ I could have left it.
— I am not sure ____ I could have left it.
| A.whether | B.what | C.when | D.where |
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。
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