我的车出了个小问题，但现在修好了。

I had a ___little problem with my car, but it’s fixed now.

她为每一件小事都真的很烦恼。

She gets really upset by every ___little thing.

只有一个小问题。不幸的是，房间是单人间。

There is only one ___little problem. Unfortunately, [the] rooms are single.