--- When While  it started to rain I was working in the garden.

His friends came  --- When While  he was doing engbook.

--- When While  students were reading teacher went out from classroom.

Szymek was talking with mother  --- When While  wall fell down.

Did brother hit him  --- When While  he was playing coumpter games?

 Were they outside  --- When While  the match started?

--- When While  Wojtek died I was in the shopping centre.

Father puked  --- When While  he was flying by plane with his family.