-How much is the pair of shoes?-Twenty dollars ____ enough.A. is   B. are     C.

-How much is the pair of shoes?-Twenty dollars ____ enough.A. is   B. are     C.

题型:不详难度:来源:
-How much is the pair of shoes?
-Twenty dollars ____ enough.
A. is   B. are     C. am  
答案
A
解析
考查be动词的用法。根据文意,twenty dollars看成一个整体,表示单数概念,故用is。
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