1.That`s a nice idea=a.OK , I agree.
2.I don`t mind. = a.OK , I agree.
3.I`d rather (go shopping) =c.I`ve got a different idea and I prefer that.
4.I don`t really want to do that .= c.I`ve got a different idea and I prefer that.
5.That`s fine with me.=a.OK , I agree.
6.I think that`s a good idea.=a.OK , I agree
7.All right then. = a.OK , I agree