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3．We don't have towear（wear） our school uniforms at school．

分析我們不必在學校穿校服．

解答答案：wear．
根據We don't have to--（wear） our school uniforms at school，可知我們不必在學校穿校服，這里have to表示不得不，to后面跟動詞原形．故填wear．

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