- The document is about a unit of lessons that aims to revise what things are made of, sentences using "it's" and passive verbs, and reading about oil and what it is used to make. - Lesson 2 discusses that oil is used to make fuels and most plastics, and is found near Suez and in Sinai. - Lesson 3 contrasts active and passive voice when discussing that fuels are made from oil and oil is used for kerosene and other fuels.