我不介意我们做什么——由你决定。

I don't mind what we do - it's ___your ___call.

这是我的看法，但由你决定；和你的父母谈谈。

This is my opinion, but it's ___your ___call; talk to your parents.

我们是坐火车还是开车去，由你决定。

Whether we go by train or car is ___your ___call.