九年级英语分类题库――情态动词1．This key ____ be Peter's. His is still in the lock.A． may not B． can' t C． mustn't D． needn't2．It's cold outside. You'd better ____ your coal. A．not to take off B．not take off C．to not take off D． don�...

时间:2025-04-12 03:01栏目:高等教育