问题
选择题
—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
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—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
答案：B