Exercise 1: Choose the word that has the different main stress 1. A. between B. corner C. packet D. summer 2. A. popcorn B. sausage C. sandwich D. balloon Exercise 2: Choose the word whose underlined part is pronounced differently from the rest 1. A summer B. student C. unhappy D. umbrella 2. A. exciting B. interesting C. expensive D. bridge 4. A. temple B. engine C. excite D. elbow 3. A. wool B. engine C. excite D. elbow 5. A. India B. pilot C. invitation D. inventor