◎ 题干
Mom says we ________clean the room right now.
[     ]
A. not have to    
B. not to have to      
C. don't have to
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Mom says we ________clean the room right now.[ ]A. not have to B. not to have to C. don't have to…”主要考查了你对  【助动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。