あの子こ、最近さいきんすごく積極的せっきょくてきだね。

ano ko, saikin sugoku sekkyokuteki da ne.

That kid has become really outgoing lately. casual

新あたらしい仕事しごとには積極的せっきょくてきに取とり組くんでいます。

atarashii shigoto ni wa sekkyokuteki ni torikunde imasu.

I am tackling the new job proactively. neutral