Llittle Nick has to stay at home to take care of his mother,---?

问题描述:

Llittle Nick has to stay at home to take care of his mother,---?
A.does he B.is he
C.doesn't he D.hasn't he

选择C,前面是一般现在时的肯定句,并且是单数第三人称,故后面的反义疑问句要用doesn't he