his brother works_________ an engineer at a car factory

问题描述:

his brother works_________ an engineer at a car factory
A: asB: at C: in D:on
选哪个?为什么?

a
作为一名工程师
助你学习进步什么情况下as当作为讲?一般的时候加“职业”就表示作为的意思