她同事的笑声只是让她更尴尬了。

Her colleagues' laughter only ___added ___to her embarrassment.

更痛苦的是，我的右手还骨折了。

To ___add ___to the bitterness, I had my right hand broken.

持续的噪音增加了我工作中的压力。

The constant noise ___adds ___to my stress at work.