Put the correct preposition from the following list in each space

Put the correct preposition from the following list in each space below: at, from, in, into, of, to.
1)Which school do you go ... ?
2)He left school ... the age ... eighteen.
3)The summer terms ends ... July.
4)She is not at home, she's ... school.
5)His lecture was divided ... two parts.
6)She is ... the same class with her cousin.
7)Students usually receive grant ... the state.