To get a kilogram of chocolate, _______1______liters of water is needed. to get a kilogram of beef, ________2________liters of water is needed. To get a kilogram of rice, ________3______ liters of water is needed. To get a hamburger, _____4_______liters of water is needed. To get an apple, ______5_______ liters of water is needed. To get a slice of bread, ____6_______ liters of water is needed.