1. 1 - B, 2 - A, 3 - D, 4 - G, 5 - E, 6 - C, 7 - I, 8 - H, 9 - F
2. 1 - arteries, 2 - veins, 3 - heart, 4 - lungs, 5 - stomach, 6 - gall bladder, 7 - kidneys, 8 - larynx, 9 - liver, 10 - pancreas, 11 - spleen
3. 1 - nitrogen, 2 - silver, 3 - iron, 4 - gold, 5 - oxygen, 6 - sodium, 7 - hydrogen, 8 - carbon