他们决定用一款更省油的车型来替换他们的旧车。

They decided to ___replace their old car with a more fuel-efficient model.

这家工厂用自动化机器取代了它的大部分工人。

The factory ___replaced most of its workers with automated machines.

我需要换掉这张桌子，因为没有足够的空间放我的电脑。

I need to ___replace this desk because it doesn't have enough space for my computer.