Collective nouns, when pluralized, such as committees, armie must always take the plural form of the verb. Example Litters of pigs are housed in huge pens. Flocks of sheep graze on those grassy hills. Let's practice! Encircle the collective noun in each sentence and underline the verb. 1. Has anyone seen a bunch of keys? 2. She was attacked by a warm by a swarm of bees. 3. I received a bouquet of flowers from my Auntie.​