A. eruption B. oxygen C. society D. each other A. practise B. custom C. auntie D. microscopic A. reliable B. at the same time C. work out D. emit A. write down B. apart C. geography D. make an effort A. bigger B. classmate C. over there D. typesetting A. leave B. outline C. mainly D. No entry A. unexpected B. sometime C. certificate D. daily life A. nationwide B. technician C. same D. the Nile A. indifferently B. build C. chemistry D. clean my room A. accuse of B. keep on C. truck D. purchase