我轻轻地走过婴儿房，生怕吵醒他。

I walked quietly past the baby's room ___for ___fear ___of disturbing him.

他犹豫着不敢打开邮件，生怕收到坏消息。

He hesitated to open the email ___for ___fear ___of receiving bad news.

他们低声交谈，生怕被人偷听。

They spoke in whispers ___for ___fear ___of being overheard.