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    This sentence needs . A.a improvement B.improve C.improving D.improved 析:初看此题似手A.C皆可.但improvement是元音开头词.其前要用an,故排除.need作实义动词.和require,want一样.后面可跟doing或to be done 表“需要被- 意.如:The door needs/wants/requires painting/to be painted. 【查看更多】

     

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