题目内容
【题目】She spent doing her homework yesterday.
A. a half and two hour B. two and a half hour
C. two hour and a half D. two and a half hours
【答案】D
【解析】句意：她昨天花了2个半小时做作业。几个半小时有2种表达方式：基数词+hour(s) and a half或者基数词+a half hours；根据two可知用hours；故选D
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