distractors: us them yourself
sentence: When you are in  trouble  at school, your classmates will help you; when you study hard at your  lessons  , your parents are always taking good  care  of you; when you get success , your friends will say congratulations  to  you; when you do something  wrong  , people around you will help you correct it; and when you do something good to  [MASK]  , you will feel happy, too.