In big cities the roads are often too crowded to drive (along).along必须有吗 一个选项有along 一个选项 没有 答案是有along的.

The air in mountain areas is _that in big cities the Big Ben is f_ place ro visit in _ Shanghai is one of__ in China.选择：A.the big cities,B.the biggest cities.为什么? cities will be very big and crowded in the future对very big and crowded 提问 The ______________ is one of the most serious problems in most big cities. Few than1500 teenagers in big cities sweep the floor and make the bed是啥意思 tom lives in ( )in the usaA,one of the big city B,the bigger city C,one of the biggest cities D,the biggest cities There is more and more air __(污染)in the big cities .填什么形式 Big cities are usually c_______ in the main streets.There are people here and there. you should be careful when___(cross) the street in big cities到底是cross还是crossing? Shanghai is one of the______(big)cities in the world 完形填空 Cleaning woman in big cities usually get _______(pay) by the hour. cleaning women in big cities usually get paid by the hour.的中文意思? the traffic ecpecially in big cities is getting heavier and heavier 什么意思 even during the horse and carriage days,traffic in big cities was often I don't believe in such a big cities also find the other for some big cities across the 是 the lifestyle in big city 还是 lifestyle in big city is attractiveIn contemporary society, lifestyle in big cities is attractive对吗