A. select B. boo C. strata D. mile A. humidity B. up C. in response to D. earn A. drama B. riverside C. fluctuation D. border A. cascade B. vie C. smartphone D. perception A. happily B. speculative C. undeniable D. obvious A. undulate B. herself C. goodwill D. derrick A. geologist B. aphid C. due to D. crayon A. grid B. green C. sickness D. deviation A. attic B. take a seat C. seminar D. haul A. turbulent B. saint C. twenty-two D. carving