“If you are to succeed, you must put your shoulder to the wheel." my head teacher _______ says to the class.

–It’s too late to go to the football match now; ______,it’s being to rain. 

You needn’t have apologized for your absence—      , it’s hardly your fault.

Some people either _____ avoid questions of right and wrong or remain neutral about them.

He was breathing ______ after the relay race.