Question

---- Your sister isn’t a nurse, is she?
----- ________. She teaches English in a middle school.
A. No, she isn’t    B. yes, she is        C. Yes, she isn’t   

Answer 1

A

英语中反义疑问句的回答只依据事实回答，B选项首字母没大写，C选项前后矛盾，故选A。