---Who’s the man over there? Is it Mr. Black?--- It _________ be him. He’s much taller.
you read, you understand.
He is_______ usual man but last week he did _______unusual thing——saving a boy out of water.
--- Oops! I put in sugar _______ salt. --- It’s OK.
Don’t lose ______ in the computer games, boys!
I often see him _______ uniforms.