1.taller,两人之最用比较级来形容,不用最高级
2.best ,三人或以上的比较用最高级
祝楼主更上一层楼Beijing is one of____(old)cities in China.The text is_______(difficult)in the book.She can speak English as_____(well)as you.Ants have____(small)legs of these animals.I think dogs are_____(good)pets.summer days are_____(hot)than winter days.mike_______(think)snakes are scary.1.the oldest2.the most difficult3.well4.the smallest5.the best6.hotter7.thinks