.那是不是whom was it invented by 0.0
问题描述：
.那是不是whom was it invented by 0.0
答
Who invent it?不就可以了么
答
对.whom作介词by的宾语.
祝你学习进步,更上一层楼! (*^__^*)
不明白的再问哟!请记得采纳,多谢!