. " NO ONE HAD CLEANED THE WALLS BEFORE THEY PAINTED THEM "...

8) - DE KIEM TRA GIUA HK 2 10
DE KIEM TRA GIUA HK 2 10
8). " No one had cleaned the walls before they painted them " means ____________A). The walls had been cleaned before they were painted .B). The walls hadn't been cleaned before they were painted.C). The walls had not been cleaned before they were not been paintedD). The walls had been cleaned by some one before they had been painted