有人故意在聚会的食物里下毒。

Someone deliberately ___poisoned the food at the party.

工业废料毒害了河流，导致鱼类全部死亡。

Industrial waste ___poisons the river, killing all the fish.

火灾产生的有毒烟雾污染了社区空气。

The toxic fumes from the fire ___poison the air in the neighborhood.