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試題詳情
Up to now more and more high-rise buildings have been builthave been built(build)in big cities for lack of space.
【考點】現在完成時;現在完成時的被動語態.
【答案】have been built
【解答】
【點評】
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發布:2024/5/23 20:38:36組卷:0引用:1難度:0.7