这一回应是庄重的，以严肃态度对待问题。

The response is ___solemn, treating the issue with gravity.

婚礼仪式在庄严的气氛中进行。

The wedding ceremony is held in a ___solemn atmosphere.

法官在法庭上保持着庄严的仪态。

The judge maintained a ___solemn demeanor in the courtroom.