The boy has to stay at home to look after his litter sister, ?
A. does he
B. has he
C. doesn’t he
D. hasn’t he
网友回答
A. does he
B. has he
(答案→)C. doesn’t he
D. hasn’t he
解析：在反义疑问句中，如果前半句是肯定句，则后半句用否定句；如果前半句用否定句，则后半句要用肯定句。因为题干的前半部分用的是肯定句，故后面应该用否定句，所以排除AB；又因为前面的has 不是助动词，而是实意动词，应该借助does来问。所以本题选C。