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---You may find the key to the maths problem on Page 18. ---Ah, It’s so simple. I wonder why I out that. A. hadn’t thought B. haven’t thought C. didn’t think D. wouldn’t think 【查看更多】

 

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---You may find the key to the maths problem on Page 18.
---Ah, It’s so simple. I wonder why I      out that.
A. hadn’t thought     B. haven’t thought    C. didn’t think    D. wouldn’t think

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