我下周将去巴黎执行一项事实调查任务。

I'll be going on a fact-finding ___mission to Paris next week.

显然有人试图破坏这个任务，并给了他们俩不同的代码词。

Apparently somebody had tried to sabotage the ___mission and given them both different code words.

这位外交官被派去执行一项秘密任务以谈判和平。

The diplomat was sent on a secret ___mission to negotiate peace.