Our school is[ ]middle school in our city 怎么选?

问题描述:

Our school is[ ]middle school in our city 怎么选?
A.the second big B.the first big C.the second biggest D.the first biggest
选什么
麻烦 说明为什么

C.the second biggest
第二大 =the second biggest为什么 不能 选 D 呢 ?D.the first biggest应该把first去掉