◎ 题干
— Could you come to the party this weekend?
— I'm afraid I can't join you. I _____ look after my grandma.
[     ]
A.used to
B.have to
C.prefer to
D.belong 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“— Could you come to the party this weekend? — I'm afraid I can't join you. I _____ look after my grandma. [ ]A.used to B.have to C.prefer to D.belong to…”主要考查了你对  【实义动词】  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。