他剧烈地颤抖着，仿佛被闪电击中一般。

He ___trembled violently as if struck by lightning.

小狗在兽医检查时不停地扭动身体。

The puppy kept ___trying during the vet examination.

看到蜘蛛时，她的脸扭曲了一下。

She ___twisted her face when she saw the spider.