Fill in the blanks with an appropriate preposition: The book is divided ... ten chapters. Raw meat must be kept separate ... cooked meat

prepossitions( Fill in the blanks with an appropriate preposittion)
1. the book is divided..................ten chapters 
2. Raw meat must be kept separate............... cooked meat
3.Lan corresponds.............Maryam at leats once every two weeks
4.I soon became friendly.................... the couuple next door.They were friendly.............us
5.Their diet consisted largely........vegetables
6.We learn all subjects...............English
7.He went out..................... saying a world