题目内容
17.-How much is the pair of shoes?-Twenty dollars ____ enough.( )
| A. | is | B. | are | C. | am |
分析 -这双鞋子多少钱?-二十美元就足够了.
解答 答案:A 考查be动词的用法.根据"表示数量、金钱、距离"的时候,要把他们看作一个整体看待,因此要把twenty dollars看成一个整体,表示单数概念,故用is.故选A
点评 这个题目重点考查表示整体概念的作主语,谓语动词用单数这个语法知识.
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