nuisance

我忘了带伞——真讨厌！

I've forgotten my umbrella - what a ___nuisance!

我不想添麻烦，但你能帮我吗？

I hate to be a ___nuisance, but could you help me?

我把伞忘在咖啡馆了——真麻烦！

I forgot my umbrella in the cafe - what a ___nuisance!