①结论的否定；②已知条件；③公理、定理、定义等；④原结论．

《联合国气候变化框架公约》第十八次缔约方大会暨《京都议定书》第八次缔约方会议将于2012年11月26日至12月7日在卡塔尔和朝鲜举行。据此完成下列问题。

①与别人竞争时，不忘合作

②只有竞争才能够超越别人

③适度竞争能帮助我们进步

④与别人合作需要牺牲自我

听短文，写出所缺部分。

    Hi! My name is Linda! I'm a middle school student. It was____lastSunday．After breakfast, my grandparents went for a walk in the park with their dog．They liked the____air there．My father____with his friend．My mother had to____．What about my brother? He read a book about____in his room．I practiced the piano in the living room．