Contents

Exercise 1 Exercise 2

Exercise 3 Exercise 4

Exercise 5 Exercise 6

Exercise 7 Exercise 8

Exercise 9 Exercise 10

Exercise 11 Exercise 12

Exercise 13 Exercise 14

Exercise 15 Exercise 16

Exercise 17 Exercise 18

Exercise 19 Exercise 20

Exercise 21 Exercise 22

Exercise 23 Exercise 24

Exercise 25 Exercise 26

Exercise 27 Exercise 28

Exercise 29 Exercise 30