All of her time was devoted to_______ her homework, so she had no time to have fun.A.doB.doingC.doesD.done
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B解析试题分析：考查固定搭配。固定搭配be devoted to sth/doing sth致力于做某事；这里的to是介词，故后面使用动名词的形式。句意：她所以的时间都花在了做家庭作业上了，所以她没有时间去玩。故B正确。考点：考查固定搭配
点评：本题是有devote oneself/some time to…转换而来；形成了be devoted to sth/doing sth的形容词结构，像这样的动词短语转换成形容词短语的用法有很多，平时要多加留心。