A. have a gift for B. reusable C. system D. complex A. spaceship B. waist C. task D. mend A. lay eggs B. do shopping C. admittedly D. sad A. comet B. very C. permanent D. get away A. highway B. acid C. broad D. try one's best A. nutrition B. lessen C. seven D. crevasse A. electronic B. spectacular C. youth worker D. exist A. extinct B. fold C. downstairs D. evening A. bluebottle B. reliable C. billion D. hover A. unlike B. differently C. dial D. encroaching