Yesterday we had been playing for two hours when Tom arrived.
When it was 3:00 p.m I had been waiting for Bob for two hours. преобразуйте каждое из этих предложений в вопросительно и отрицательное.

Had we been playing for two hours yesterday when Tom arrived Yesterday we hadnt been playing for two hours when Tom arrived.
Had I been waiting for Bob for two hours when it was 3:00 pm I hadnt been waiting for Bob for two hours when it was 3:00 pm.