1- Int: Are my friends nice? Neg: My friends aren't nice.  
2- Int: Does she work full time? Neg: She doesn't work full time. 
3- Int: Are they tall? Neg: They aren`t tall. 
4- Int: Do play the piano? Neg: You don't play the piano.
5- Int:Do you study in the morning? Neg: You don't study in the morning.