они бы уже закончили работу,если бы

они бы уже закончили работу,
если бы только ты не пришел и не начал шуметь

Результаты (английский) 1:

they had already finished their work,If only you did not come and started to make noise

Результаты (английский) 2:

they would have finished the job,
if only you had not come and started to make noise

Результаты (английский) 3:

They would have already finished work,
if you would only do you not come and do not began a buzz