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Towdays()enoughformetofinishthework,Ineedathirdday.Aisn'tBaren't该选择哪一个?为什么?还想到一个类似的句子:towyears()alongperiodoftime.这里应该用is还是areTHANKS:J

题目详情
Tow days ( )enough for me to finish the work,I need a third day.
A isn't B aren't 该选择哪一个?为什么?
还想到一个类似的句子:tow years( ) a long period of time.这里应该用is 还是 are
THANKS :J
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答案和解析
用"is",TWO DAYS 代表一段时间,视为单数.