请问这句话I've got a proposition that I'm sure will interest you.这句话有错吗？

有错，改为：
I've got a proposition that is sure to interest you.
我有个提议，保证你会感兴趣。

I've got a proposition which,i am sure, will be full of interest to you.
没见过那么用的

= =没什么问题啊

I've gotten a proposition (that) I'm sure you'll be interested in.
I've gotten a proposition in which I'm sure you'll be interested.