4–8. Underline the conjunction in each compound subject or predicate. Then write the simple subjects or simple predicates that are joined by the conjunction. 4. Test tubes and flasks are placed on the shelf. 5. Would you rather clean the tanks or wash the beakers? 6. We sweep the lab every week and help Mr. Wallace with other chores. 7. Biology and chemistry are both taught in this room. 8. Jackson and Felicia said the science classroom looked much neater.