They are like living textbooks for young people.(为什么living后不

They are like living textbooks for young people.(为什么living后不 They are like living textbooks for young people Animals are living textbooks for young people to know the an zoos are just like ____(live)textbooks for young people visiting zoos are like living textbooks.为什么用are不用is? 英语阅读Dogs like living with people.They are very friendly.They 英语短文Dogs like living with people.They are very friendly.They people living for what? living in cities ____ too much for young people(cost) Are they living in China? ___ miserable life they are living 选哪一个?为什么? They are [ ] living in China .A neither B both 为什么?