英语翻译These two rooms are a Tom and Jim's bTom's and Jim cTom's and Jim's

TOM and JIM’s

用 Tom and Jim's ，因为Tom and Jim's 表示两个人共有的，而Tom’s and Jim's 表示各人是各人的！
The room belongs to Tom and Jim's .

this room belongs to Tom and Jim
this is Tom and Jim's room

Tom and Jim's 两个人共有的
Tom’s and Jim's两个人各自的房间
This is Tom and Jim's room, and these are Jack's and Mary's rooms.
这间汤姆和吉姆的房间（两人共用），这两间是杰克和玛丽（各自）的房间。

这些房间是汤姆和吉姆的.
翻译：These rooms are Tom’s and Jim's.
原文是“这些房间”,说明不止一间房间,也就是说是他们分别的房间,所以用：Tom’s and Jim's.如果用“Tom and Jim's”,则说明这间房间是他们共有的,译文应该是：
This is Tom and Jim's room.
问题补充：
These two rooms are Tom’s and Jim's.
正确答案是：C
见上.