Five thousand dollars ____ a lot of money.A,are B,is C,have been D,has been 选哪个为什么

问题描述:

Five thousand dollars ____ a lot of money.A,are B,is C,have been D,has been 选哪个为什么

B 前面的500美元是一个整体,作单数使用,类似的还有
Three years is a long time