вчера занимался

was doing something yesterday

→ вчера
phrase Rare #38,945
was doing something yesterday Занимался is the masculine singular past form of заниматься; depending on context, it can mean being busy with, working on, studying, or practicing something.
RU: Я вчера занимался музыкой.
EN: I practiced music yesterday.

Ты вчера занимался?

Did you study yesterday?

Том вчера занимался детьми.

Tom was busy with the children yesterday.

Я знал, что Том этим вчера занимался.

I knew Tom was doing this yesterday.

Чем вчера занимался?

What did you do yesterday?