You've failed to do what you __________ to and I'm afraid the teacher will blame you.
They weren't a particularly good team, but they refused to give in and _____ defeat.
—Must I turn off the gas after cooking ? --Of course . You can never be ___ careful with that.
There are five pairs, but I'm at a loss which _____ to buy.
He suggested the person referred _______ put into prison.
She's too thin. She ____ gain some weight but she _____ too little.