1 Tom can run ( ){fast} ,jump ( ){high} and throw ( ){far} than ever before.2 People also work ( ){hard} and lead ( ){bu
问题描述：
1 Tom can run ( ){fast} ,jump ( ){high} and throw ( ){far} than ever before.2 People also work ( ){hard} and lead ( ){busy} lives.3 Big cities are ( ){pleasant} places to live than before because they are ( ){dirty} and ( ){crowded}.4 They are also ( ){dangerous}.5 Travelling is ( ){easy} than before ,and air travel is the ( ){comfortable} way to travel long distances.
答
1. faster higher farther 2,.hard busily 3.pleasanting dirty crowed 4.、 dangerous 5.easier most comfortable thanks