Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions from 29 to 35. Can you understand the beginning of this essay "My smmr hold wr CWOT"? A Scottish teacher had no idea what the girl who wrote it meant. The essay was written in a form of English used in cell phone text messages. Text messages (SMS) through cell phones became very popular in the late 1990s. At first, mobile phone companies used text messaging as a way to contact customers, but users also messaged each other. Teenagers in particular enjoyed using text messaging, and they began to create a new language for messages called texting. A text message is limited to 160 characters, including letters, spaces, and numbers, so messages must be kept short. In addition, typing on the small keypad of a cell phone is difficult, so it is common to make words shorter. In texting, a single letter or number can represent a word, like "r" for "are" and "2" for "to." Several letters can also represent a phrase, like "lol" for "laughing out loud." Another characteristic of texting is the leaving out of letters in a word, like spelling "please" as "pls". Some parents and teachers once worried that texting would make children bad spellers and bad writers. The student who wrote the essay at the top of this page said writing that way was more comfortable for her. Some experts say languages always evolve, and this is just another way for English to change. Today, people can send longer texts and emojis through various applications. Still, teenagers often use short forms and their own texting styles like "idk" for "I don't know" or "tbh" for "to be honest". Texting language has just moved to new forms. (Adapted from Reading Advantage by Casey Melarcher) Question 29: What is the main idea of the passage? A. Importance of texting. C. Poor spelling and writing. B. Advertising message service. D. A new language by teenagers. Question 30: The word they in paragraph 1 refers to A. teenagers B. messages C. companies D. customers