A. milestone B. tool C. steady D. with A. collide B. cute C. insoluble D. windowsill A. formation B. uncle C. ghost D. but A. party B. delightful C. bingo D. heading A. porpoise B. forget C. matador D. receive A. black-and-white B. shortage C. active D. come up with A. discern B. download C. talk D. silver A. build B. quiet C. hierarchy D. insularity A. mini-world B. helpful C. debit D. accurate A. take a breath B. diversion C. fairly D. all