填入适当的介词 Do you know what we are working____?

填入适当的介词 Do you know what we are working____?
填入适当的介词 Do you know what we are working____?

填入适当的介词 Do you know what we are working____?
for
你知道我们工作为了什么吗?

for
for 表示原因。
祝你学习进步，更上一层楼！(*^__^*)

on

for

at