A. continent B. idea C. in one's opinion D. block out A. hybrid B. lobster C. thus D. come from A. yard sale B. shortcoming C. phrase D. get the hang of A. jumping rope B. chain C. furthest D. tongue A. oarfish B. as as C. cheer up D. a world of A. aluminium B. biology C. subscribe D. illness A. convertible B. crucible C. efficient D. dioxide A. sheriff B. more than C. fist D. astronomy A. birth B. weightlessly C. ahead D. birthplace A. flint B. astronomer C. water ski D. chairman