一个英语问题:Mike had got a very bad cold and coughed day and night.

问题描述:

一个英语问题:Mike had got a very bad cold and coughed day and night.
day and night 等于哪个选项?
A.all the day B.all day C.all day long D.all the time
选择哪一个呢?还有各选项之间的区别是什么?

选D.
A没有这种说法
B和C的意思一样,都是表明一整天,但是没有超过一天
D表示一直没有间断,有持续的意思.