Use prepositions ( вставьте предлоги ) 1. he said something his neighbour the lunch 2. they always laugh people , don't help them 3.it is very important each us to work hard 4. never think your past mistakes

1. He said something __to___ his neighbour __about___ the lunch
2. They always laugh __at___ people , don't help ____ them 
3.It is very important __for___ each __of__ us to work hard
4. Never think __of__ your past mistakes