visiting zoos are like living textbooks.为什么用are不用is?这里应该是Visiting zoos动名词做主语啊.谓语动词不用单数吗?

visiting zoos are like living textbooks.为什么用are不用is?这里应该是Visiting zoos动名词做主语啊.谓语动词不用单数吗? 请问为什么 like living 而不是like live,这里是像而不是喜欢Visiting zoos are like living textbooks for young people. Lots of people enjoy ___ parks and zoos(动物园）.A:visit B:visiting C:to visit Some people think the zoos are _____ for animals zoos are just like ____(live)textbooks for young people What are some reasons for having zoos?What are some reasons for not having zoos?Make a chart What are some reasons for having zoos?What are some reasons for not having zoos?Make a chart怎么回答？ They are visiting their friends .they are they visiting the great wall now 比如宾语从句where they live in 和where they live九年级下册英语第15单元（go for it) SECTION A 3a中有两个句子1Zoos are terrible place for animals to live.2I have never saw one i liked or one that was suitable for animals to li We are all looking forward to visiting your country .为什么用这个visiting 动词 Look!The students with their teacher________ the Shanghai PavilionA.are visiting B.is visiting Do you live here and are you visiting?哪一个单词错了：DO live and visiting i with my parents_____my uncle in Hangzhou是is visiting 还是are visiting?为什么? zoos are terrible places for animals to live.places 在句中作什么成分? Zoos are terrible places for animals to live.应该live 后有in Zoos are terrible places for animals to live这句话有错吗? Zoos are terrible places for animals to live.一句中live后面为什么不加in?