【題目】We must do as much as we to make our country better and more beautiful.

【答案】can
【解析】can考查固定短語。as+形容詞/副詞+as sb can，意為“盡可能......”，句意：我們必須盡我們所能，使我們的國家變得更好、更美麗。故填can。

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