1.
When a liquid that is being heated boils over, it rises and flows over the edge of the container.
Heat the liquid in a large, wide container rather than a high narrow one, or it can ~.
PHRASAL VERB: V P
2.
When someone’s feelings ~, they lose their temper or become violent.
Sometimes frustration and anger can ~ into direct and violent action.
= erupt
PHRASAL VERB: V P