We can never expect bluer sky unless we create less polluted world. A. a; a B. a;——青夏教育精英家教网—

摘要： We can never expect bluer sky unless we create less polluted world. A. a; a B. a; the C. the; a D. the; the

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We can never expect ________ bluer sky unless we create ________ less polluted world.(2009安徽高考题)

A．a; a B．a; the　 C．the; a　 D．the; the

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