YOU SAID:

Horrified looks from everyone in the room

INTO JAPANESE

部屋にいる全員が恐怖の表情を浮かべた

BACK INTO ENGLISH

Everyone in the room had a look of terror

INTO JAPANESE

部屋にいた全員が恐怖の表情を浮かべた

BACK INTO ENGLISH

Everyone in the room had a frightened look on their face.

INTO JAPANESE

部屋にいた全員が恐怖の表情を浮かべていました。

BACK INTO ENGLISH

Everyone in the room had a look of horror on their face.

INTO JAPANESE

部屋にいる誰もが恐怖の表情を浮かべていました。

BACK INTO ENGLISH

Everyone in the room had a look of horror on their face.