Mary lives in a town. the town is big and nice. she goes to school. (общ.) she is a good pupil. (общ.) mary is seven. (спец.) she can read well. (спец.)

Mary doesn't live in a town. 

 The town isn't big
and nice. 
(общ.) Does she go to school?

(общ.) Is she a good people?

(спец.) How old is Mary?

(спец.)  How can she read?