Where can the children leave their bicycles? - street - netherlands - behind - university - schoolyard  The best answer is
schoolyard

What happened when economic forces don't match a changing society? - change in leadership - anger - resentment - heartache - depression  The best answer is
depression

Seeing someone open a gift after buying christmas presents causes what for the gift giver? - stress - understand themselves - pleasure - sense of joy - debt  The best answer is
pleasure