Politics meant________________to me for years, for I didn't care about it at all.
--- Isn't that Ann's husband over there? --- No, it ______ be him---I'm sure he doesn't wear glasses.
Mr White____at 8:30 for the meeting, but he didn't show up.
I often see lights in that empty house. Do you think I ______ report it to the police?
--- I don't mind telling you what I know. --- You ______. I'm not asking you for it.
Coal is hard, like a rock and yet it burns, while no rocks ______.