After April 30,we will have no choice but _______ your credit.

问题描述:

After April 30,we will have no choice but _______ your credit.
A.cancel B.canceled C.will cancel D.to cancel 选哪个?为什么?

D
BUT 连接的词是‘ 有DO 没TO ,没DO 要有TO ’
如何理解‘ 有DO 没TO ,没DO 要有TO ’?就是BUT 前没有DO,它后面就要有TO ,前有DO时后面不要TO 又如He does nothing butlisten to music .