______ the difference between the two research findings will be one of the worst mistakes you make.

y” is the hardest word to say sometimes. _______ you know you’ve done something wrong, or something inappropriate, it takes courage to say sorry.

Every student and every teacher ________.

_____ to look after luggage for someone else, inform the police at once.

Alice, you feed the bid today, _______ ?　　—— But I fed it yesterday .