Объяснить написание окончаний ing, частиц to, и т.д. на выделенных словах

Acting - after certain verb start используем -ing

To run - after certain verb DECIDE используем to

Looking for - after expressions (to be busy) используем -ing

To happen - after prepositions

Mean - after modal verb

Predicting - after prepositions

Hearing - as a noun

Enabling - as a noun

To feel - to show purpose

To warn - to show purpose

Know - after modal verb

Take - after modal verb

To tell - after certain verb Try используем To