A. chasm B. in the end C. study D. bride A. grave B. communicate C. hub D. expose to A. steep B. living room C. corner D. yesterday A. participant B. ride a bike C. oxygen D. come to power A. philosophy B. abandon C. analysis D. permanently A. initiative B. tractor C. starfish D. literature A. universal B. good morning C. fascination D. tense A. administer B. organized C. packaging D. appeal A. lead a life B. sickness C. impatient D. backward A. look after B. subtle C. recognize D. accelerate