( ) This is school. There are five grades in .A. we; it B. us; its C. our; it D. our; its——青夏教育精英家教网—

摘要：( ) This is school. There are five grades in .A. we; it B. us; its C. our; it D. our; its

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从所给的四个选项中选择最佳答案

This is ______ school．There are five grades in ______．　　　

[　　]

A．we, it　　　B．us, it's

C．our, it　　　D．our, its

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