她决定满怀热情地全身心投入这个新项目。

She decided to ___dive ___into the new project with great enthusiasm.

毫无经验的他，就这么一头扎进了他的第一部小说的创作中。

Without any prior experience, he just ___dove ___into writing his first novel.

这个机会太好了不容错过，所以我立刻投入了谈判。

The opportunity was too good to pass up, so I ___dived ___into the negotiation immediately.