Match the letter A, B, C or D on your answer sheet to indicate the word that differs from in the other three in the position of primary stress in each following sentence

II. Match the letter A, B, C or D on your answer sheet to indicate the word that differs from in the other three in the position of primary stress in each following sentence.
5. A. waterfall                B. vacation              C. kayaking             D. beautiful
6. A. underground         B. astronaut            C. gravity                 D. company
7. A. furniture                B. cameras              C. advantage          D. different
8. A. shopping               B. building               C. tower                   D. result