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    18．We took an active part in our school art festival．

    分析 我们积极参加学校的艺术节．

    解答 active 考查固定短语．根据句意：我们积极参加学校的艺术节．take an active part in"积极参加"．

    点评 英语中的固定短语，既不能添词，也不能少词，是固定的，要求同学们在平时记忆准确，然后根据句意找出记忆中的固定搭配，做出正确的答案．

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