题目内容：

two days ____enough for me to finish the work .I need a third day.
A is not B is C are not Dare
选择什么?为什么

优质解答

A ( 表示时间、距离、重量、金钱等作主语时,把它看成一个整体,谓语动词用单数,根据I need a third day.说明‘两天不够’））