Don’t mention that she’s put on weight — she’s very _______ about it.
--- 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 ______.