11、---Have you found your book yet?
---No. I’m not sure _____ I could have left it.
A. whether B. where C. when D. why
科目：高中英语 来源： 题型：
---Have you found your book yet?
---No. I’m not sure _____ I could have left it.
A. whether B. where C. when D. why
科目：高中英语 来源： 题型：
--Have you found your book yet?
--- No, I’m not sure where I________ it?
A. leave B. had left C. could have left D. was to leave.
科目：高中英语 来源： 题型：
---Have you found your book yet?
---No. I’m not sure where I ___it.
A. leave B. had left C. could have left D. was to leave
科目：高中英语 来源： 题型：
---Have you found your book yet?
--- No, I’m not sure where I________it?
A. leave B. had left C. could have left D. was to leave.
科目：高中英语 来源： 题型：
---Have you found your book yet?
--- No. I’m not sure where I it.
A．leave B．had left C．could have left D．was to leave
科目：高中英语 来源：云南省玉溪一中09-10学年高二下学期期中考试 题型：单项填空
---Have you found your book yet?
--- No, I’m not sure where I it?
A. leave B. had left C. could have left D. was to leave.
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