A. scientist B. graduation ceremony C. refinement D. polluted A. industrial B. cold pill C. altogether D. permanent A. marquis B. ageing C. smart D. dry-clean A. in front of B. Mars C. grimly D. be connected with A. play chess B. critic C. noisy D. inhabitant A. fix B. rent C. sheep D. hunger A. I'd like B. deliever C. on board D. index A. launch B. now that C. adjustment D. income A. congratulation B. be proud of C. endanger D. vast A. household B. spill C. spare D. body