Подставьте в предложения предлоги: of,from,by,inside,in (3) the body is not different any other machine. a motorcar engine,for example, needs fuel the form of petrol. it is burnt the engine to produce the energy which drives the car. but petrol,gas,coal,wood or any other form fuel can only the presence of oxygen. thus, all machines and body cells are alike requiring oxygen to burn their fuel and thereby producte the energy needed to perform their functions. fuel or nutrients and oxygen are carried the blood to all parts of the body.