我今天打得不好，因为我久疏练习了。

I didn't play very well today because I ___am ___out ___of ___practice.

加入球队能确保我不会技艺生疏。

Joining the team ensures I won't ___be ___out ___of ___practice.

我的钢琴技巧生疏了，因为我久未练习。

My piano skills are rusty as I've ___been ___out ___of ___practice.