1) Are there any people in the street?
Yes, there are. There are some people in the street. No there aren't. There are no people in the street.
2) Was there any test at school today?
Yes, there was. There was a test at school today. No, there wasn't. There was no test at school today.
3) Are there any shops near your house?
Yes, there are. There are some shops near my house. No, there aren't. There is no shop near my house.