Tomakeriversthanbefore，everybo

To make rivers than before， everybody is supposed to protect them．（　　）

A．dirtyB．dirtierC．cleanD．cleaner

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A．betweenB．fromC．behindD．among

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A．politeB．rudeC．dangerousD．humorous

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A．our；sheB．our；herC．we；heD．we；her

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This is ___________story of friendship.Let's read _________ story together.（　　）

A．a；anB．an；theC．an；aD．a；the

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