writing for section 4

other their their

I think introverted people are not happier than outgoing people. If people who are introverted[(-- the words following "If" don't make a sentence(clause), "who" should be omitted.], they will like live [-- like TO live]alone and unlike[-- DISlike] to talk with others, they have no good friends, classmates and colleague. If they have some things in their heart[-- MIND], they fear to talk with others, so they will never share pain and happiness with other people. They will not get really[-- real] happiness. If people who are outgoing[-- ??"who" should be omitted.], they like to make friends with others. If they have some happiness, they are glad to tell their friends because they want to share happiness with their friends. Their friends are sad; they will [--a verb is needed here] responsibility for sadness with friends. They think really friends should share hardship together. They will marry sooner, get better job, and make more friends. So their life is brimming with happiness. although broken marital relationships are a source of much misery, a supportive, intimate, committed relationship is among life’s greatest satisfactions[--You should have put the underlined sentence in quotation marks "".]. But I don’t think most of marriages will break. They really love each other; they will get more happiness than pain. If people show their genuine love to others, no matter what the result would be, they will get happiness.