energy

照顾一个年幼的家庭需要大量的时间和精力。

Looking after a young family requires a lot of time and ___energy.

我今晚本想出去的，但我就是没有那个精力。

I was going to go out this evening, but I just don't have the ___energy.

你精力充沛！

You're full of ___energy!