The cat out at night.So the clever mouse at night.

问题描述:

The cat out at night.So the clever mouse at night.
A.goes;sleeps
B.go;sleep
C.going;sleeping
选哪个?The cat ( )out at night.So the clever mouse ( )at night

答案:A.
先看B选项:the cat是单三,而go不是单三,所以就排除了;
再看C选项:没有be动词为什么要加-ing呢,除非是作后置定语,但在此处不可能.
综上,所以选A.