Question

When I______(to watch) TV, my brother______(to break) my computer.

While she______(to complain) about the noise, he____(to switch) on the television

поставить в правильную форму 

Answer 1

When I was watching TV, my brother broke my komputer

While she was complaining about the noise, he dwitched on the television

Answer 2

When I was  watching  TV, my brother was breaking my computer.(одновременно происходящие действия) Кщгда я смотрела телевизор, мой брат ломал компьютер

 возможно и так:

When I was  watching  TV, my brother broke my computer (Когда я смотрела телевизор, мой брат сломал компьютер)

While she was  complaining  about the noise, he  switched on the television