dribble|dribbled|dribbles

小狗兴奋地看到食物时流口水了。

The puppy began to ___dribble excitedly when it saw the food.

酱汁从三明治上慢慢滴下来。

Sauce ___dribbled down from the sandwich.

老人在睡觉时经常会流口水。

The old man often ___dribbles while sleeping.