Our clas is going to zhe zoo ___tomorrow? A.at B.in C./ D.on 为什么?
问题描述：
Our clas is going to zhe zoo ___tomorrow? A.at B.in C./ D.on 为什么?
答
选C 不填
todaytomorrow yesterday这些今天、明天、昨天都直接用 前面不用加任何介词