他是认真想学小提琴，不只是当作随便的爱好。

He wants to learn violin ___seriously, not just as a casual hobby.

他的伤势相当严重，需要立即送医院。

He is ___s-seriously injured and needs to go to the hospital right away.

你居然中彩票了？真的吗？

You won the lottery? ___Seriously?