新郑龙湖镇能归郑州吗:There are two mistakes in this sentenes.What are they?

There are two (s )on this letter. There are two mistakes in this sentenes.What are they? There are two mistakes in this sentense. What are they? there are two beds in the twins' ()()()oo() Why are there only two main political parties in US? Behind every successful man, there is a woman. And behind every unsuccessful man, there are two. There are two int variables: a and b, don’t use “if”, “? :”, “switch” There are two things and you can never eat them for breakfast. there are two types of user retrieval tasks ad hoc and filtering这句要怎么翻译 There are two cars here, One is big, and ______is small. (4 分)