在大街上随便问一个人，他都能一板一眼地告诉你这个世界是怎么回事儿。

Ask anybody on the street and they can tell you exactly how the world works.

youdao

你是昨天在大街上碰见你老师的吗？ ？

Was it yesterday that you met your teacher in the street?

youdao

你是昨天在大街上碰见你老师的吗？ ？

Was it yesterday that you met your teacher in the street?

youdao