A-A+
-- Can you go shopping with us this afternoon?
问题详情
-- Can you go shopping with us this afternoon?-- Sorry, I can"t. I ______ take care of my little sister because she is ill.
A.have to
B.may
C.would请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:A
解析:考查情态动词。have to指“必须”,may表示“可以,可能”,would表示意愿和(过去)将来、或者表示委婉语气。由空格前的can't可知应选[A]。