... - sewage(n) : nớc thải, nớc cống 2. Practice Matching Key: 1 - f 4 - a 2 - e 5 - c 3 - b 6 - d Comprehension questions *Answers: 1. The speaker is Mr. Brown 2. The listeners are the volunteer ... exercise 8 p.45(workbook) - Prepare Speak. Period 38: Unit 6: The environment Lesson 2: Speaking Date: Jan.19th, 06 A. Objectives: - By the end of the lesson, Ss will be able to persuade their ... Why? - T : Because plastic bags are very hard to dissolve, they will cause pollution. 2. While- speaking : (P. 49) 3. Post- speaking : • Pre- teach vocabulary - T elicits vocabulary from Ss +explanation...