A. education B. vertical C. popcorn D. zip A. make use of B. most C. experience D. western A. balloon B. itinerant C. policy D. staggering A. juncture B. planter C. heat D. corporation A. apology B. green with envy C. pilot D. knock on A. lady B. twenty-three C. mind D. switch off A. unexplained B. do homework C. straight D. gust A. rock climbing B. by the way C. tribe D. cannibal A. fear B. platform C. unmanned D. walk off A. fade B. scare C. punish D. invitation