When you speak, write a letter, or make a telephone call, your words carry a message. People communicate (1) words. But do you know sometimes people also (2) without words A smile on your face shows you are happy (3) friendly and tears in your eyes tell (4) that you are (5) . When you (6) your hand in class, the teacher (7) you want to say something or ask questions. You (8) your head and people know you are saying "No", (9) if you nod, people know you are saying "Yes". Other things can also (10) messages. For example, a sign at the bus stop (11) you to know (12) bus to take, and a sign on the wall of your school helps you to find the library. Signs on the doors (13) you where to go in or out. Have you (14) noticed that there are a lot of (15) around you and that you receive messages from them all (16) time People can communicate in many other (17) . An artist can use his drawings to tell about beautiful mountains, the blue seas and (18) other things. Books are written to tell you about all the wonderful things in the world and (19) other people are (20) about.