Поставьте глаголы в past continuous active.

Detective: I’m afraid I must ask you both what you (do) yesterday at 10.20 p.m.

Mr. X: I (play) chess with my wife.

Mr. Y: I (listen) to a play on the radio.

I am afraid I must ask you what were you doing at 10.20 p.m?

Mr.X: I was playing chess with my wife.

Mr.Y: I was listening  to a play on the radio.