September 11, 2001 is the day we will never forget. A. that B. when C. on which D. on——青夏教育精英家教网—

摘要： September 11, 2001 is the day we will never forget. A. that B. when C. on which D. on that

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September 11, 2001 is the day ______ we will never forget.

A. that B. when C. on which D. on that

September 11, 2001 is the day ______ we will never forget.

A．that B．when C．on which D．on that

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