A small percentage of the grain ______ ruined by the prolonged rain.
A. was
B. were
C. is
D. are
正确答案：A
percentageof做主语部分时其谓语动词的单复数取决于它后面的名词如果是可数名词的复数谓语动词用复数形式；如果是不可数名词或是可数名词的单数谓语动词用单数Grain是不可数名词持续不断的雨毁坏了少量的庄稼
Asmallpercentageofthegrain______ruinedbytheprolong
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