301.Didyouenterthecontest?你参加比赛了吗?302.Doyouacceptcreditcards?你们收信用卡吗?303.Don'tcryoverspiltmilk．不要做无益的后悔。304.Don'tletchancespassby．不要让机遇从我们身边溜走。305.Heownedhimselfdefeated．他承认自己失败了。306.Heseemsalittlenervous．他显得有点紧张。