3. Samples of announcement: Ladies and gentlemen, A little boy, aged two years, has been found in the toys department. He is wearing a red T-shirt and white shorts. Mother or the family, would you please pick him at the information desk on the first floor of this building? Thank you All students please join the “Let’s Clean Our Rivers” program which will be held on Monday morning, at 07.00. Bring the tools needed to help you clean the rivers in the city. The principal, himself, will lead the program. Don’t miss it. Show that you are care with the environment

4. Samples of short message: Hi John, My father just bought me a new motorcycle. I’ll go through all town this afternoon. Would you join me? Thanks, David Hi Wid, I’m so confused about our Mathematic task, can you help me. If you don’t mind, I’ll come to your house at 8 p.m. Thanks, Rika

5. Samples of advertisement: