HelenandBettyareverygoodfriends.Theyareinthesame(相同的)c...
问题详情： HelenandBettyareverygoodfriends.Theyareinthesame(相同的)classatschool.Nowtheyareeightyearsold.Helen’smotherhasanewbaby.Helenisveryhappytohavealittlesister,soshealwaystalksabouthertoBetty.At...