摘要：---Have you found your book yet? ---No, I’m not sure I could have left it. A. whether B. where C. when D. why
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---Have you found your book yet?
---No. I’m not sure _____ I could have left it.
A. whether B. where C. when D. why
查看习题详情和答案>>--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.
查看习题详情和答案>>---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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