... writing, and reading comprehension. As you complete the sections, youshould be able to find your strengths and weaknesses. PRACTICE TESTS IN GRAMMAR, WRITING, AND READING COMPREHENSION 55 LearningExpress ... obligations and sacred duty” is a PRACTICE TESTS IN GRAMMAR, WRITING, AND READING COMPREHENSION LearningExpress Skill Builders ã CHAPTER 5109d. its cleansing effectPASSAGE TWONow try practicing ... the Earth, the living thingson Earth, or the circulation of the atmosphere(choices a, c, d). PRACTICE TESTS IN GRAMMAR, WRITING, AND READING COMPREHENSION CHAPTER 5 ã LearningExpress Skill...