quiver|quivered|quivering

他的手因为寒冷而微微颤抖。

His hands ___quiver from the cold.

她努力忍住眼泪，但嘴唇还是在颤抖。

Her lips ___quivered as she tried not to cry.

小狗因为寒冷而微微发抖。

The puppy was ___quivering from the cold.