Enough _____to make the streets clean.A.has been done B.have been_英语解答

Enough _____to make the streets clean.
A.has been done
B.have been done
选哪个,why?

人气：193 ℃　时间：2020-03-24 12:33:43

解答

A 为了使街道干净,已经做了够多了
enough单独做主语时,谓语用单数,这是一条语法规则.