Ifwedonotdealwithproblemcaused_优题课试题网

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更新 2022-09-03
科目英语
题型单选题
难度中等
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If we do not deal with ________ problem caused by air pollution, our planet may no longer be ________ healthy place for us.

A．a; the	B．a; a
C．the; a	D．the; the

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The road ______and it will be finished by the end of next year.

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