It is your job to keep the street 是加clean吗,为什么

题目

It is your job to keep the street 是加clean吗,为什么

答案

是.
It is your job to keep the street clean?
keep在这里是系动词.系动词后面可以接形容词作表语,也可接形容词作宾语补足语.又如：
keep healthy
keep your body healthy