make it one's business to (do something)
считать своим кровным делом, своей обязанностью
I made it my business to take care of my sister's children.
Другие идиомы:
- make a clean breast of (something)
- make mincemeat out of (someone)
- make an impression (on someone)
- make a dent in (something)
- make oneself felt
- make a play for (someone)
- make up for lost time
- make cracks (about someone or something)
- make (someone) look ridiculous
- make overtures to (someone)
- make up one's mind
- make time with (someone)
- make amends for (something)
- make (someone) sick
- not make head nor tail of (something)