adj.
VERBS
▪ be
▪ become , get
▪
The rivers became ~ as the result of industrial waste.
ADVERB
▪ badly , heavily , highly , seriously , severely
PREPOSITION
▪ with
▪
The air is heavily ~ with traffic fumes.
Polluted is used with these nouns: ↑ air , ↑ atmosphere , ↑ river , ↑ water