We may not know how to use the telephone in the country which are visiting.这是改错题

题目

We may not know how to use the telephone in the country which are visiting.这是改错题
为什么是在which后面加we 而不能把visiting改成visited 不可以是被动语态吗?

答案

which 【we】 are visiting
=which are being visited by us
可以用被动语态,但现在进行时的被动语态的动词形式为：am/is/ are +being+ 过去分词