We have stayed at this school for _____.Which of the following choices is wrongA.two and a half years B.two years and half a yearC.two years and half a year D.both A and B
问题描述：
We have stayed at this school for _____.Which of the following choices is wrong
A.two and a half years B.two years and half a year
C.two years and half a year D.both A and B
答
你打出来的B和C一样。
A和B（C）都是对的
答
选C.题目说“Which of the following choices is wrong”--“哪个选项是错误的”
“两年半” A,B两种表达都没错.