the dictionary does not belong to your brother or ( ),it is belong to me.A yours B mine为什么是B?

the dictionary does not belong to your brother or ( ),it is belong to me.A yours B mine为什么是B?
the dictionary does not belong to your brother or ( ),it is belong to me.A yours B mine
为什么是B?

the dictionary does not belong to your brother or ( ),it is belong to me.A yours B mine为什么是B?
首先belong to somebody表示“属于某人”
does not belong to your brother or mine 意思即“不属于你的兄弟或者我的兄弟”
这里 "mine" 相当于 my brother
若选A则yours应为you,否则句意有重复
希望有所帮助,加油!

这应该不是一个单选题吧，如果是一片文章的话，就要联系上下文进行分析