Do you know what it means to "wreak havoc", "spell disaster", or "prompt speculation"? In this lesson, you will learn how to use advanced expressions that describe cause and effect. These types of expressions will certainly increase your writing score in the IELTS, TOEFL, TOEIC, or any other English test. Use any of these expressions in your writing, and you are guaranteed to impress your teacher, professor, or examiner!