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You may use the book as you like, you keep it clean.A．unlessB．so longC．as longD．

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You may use the book as you like, you keep it clean.A．unlessB．so longC．as longD．

You may use the book as you like, _______ you keep it clean.

A．unlessB．so longC．as longD．so long as

试题答案

D

标签：asbooklikeyoumay

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