A. letter B. erupt C. novel D. make a deal A. self-respecting B. statistic C. observatory D. starfruit A. appoint B. cascade C. must D. occupation A. ascertain B. acknowledge C. thunderstorm D. temporary A. helmet B. say hello to C. stomachache D. mix A. clerk B. could C. equipment D. sit A. subway B. alongside C. encourage D. delighted A. first B. France C. overbalance D. database A. glue B. good-humouredly C. debate D. diagram A. go on B. floor C. sample D. influence