We didn’t go to the concert because we couldn’t to buy the tickets to it.

When he knew the disappointing result of the exam, he seemed quite_______

Is it that you often play computer games ________ worries yourparents

Sometimes I keep my feelings to myself it’s hard for someone else to understand

．Jack was still very calm, ______ the quarrel with the boss, and greeted every person he met on the way back to his office