—The room is in a mess again! ——Sorry. It is ______ who ______.
We must keep our room clean. Dirt and disease go _____, you know.
--Could I use your bike, Jack? --Of course, you____________.
--____________? --He is tall and strong.
She suggested to the police in the police station that__________.
I told you that you shouldn't waste your time playing the computer games,_____________?