杰克，我不能替你决定——这得由你决定。

Jack, I can't decide for you - it's ___be ___up ___to you.

这得由索菲来决定。

It's ___be ___up ___to Sophie to decide.

这只是我的意见——最终决定权在你。

This is just my opinion - the final decision is ___be ___up ___to you.