A. convince B. astronaut C. discard D. took pictures A. burglar B. enthusiastic C. wedding D. circular A. increasing B. grab C. related D. survey A. nationalism B. migrate C. distant D. square A. throng B. authority C. crime D. terrify A. telescope B. silt C. encroaching D. horde A. Be careful B. bomb C. anyone D. grass-seed A. after-class B. opposed C. threaten D. Florentine A. close B. happily C. business D. provocation A. lend B. frame C. NASA D. chewing gum