国家开放大学 / 管理英语2
—Can you go skating with us this afternoon?
—Sorry, I can’t. I _ _ _ _ _ _ _ _ take care of my little sister at home.
A. could
B. may
C. have to
—Sorry, I can’t. I _ _ _ _ _ _ _ _ take care of my little sister at home.
A. could
B. may
C. have to
参考答案：
佳题速递：