A. helmet B. mainstream C. spaceship D. futile A. by boat B. homeless C. scientist D. reassure A. unpack B. serenity C. care about D. why not A. architecture B. determine C. moon D. scent A. flap B. teacher C. goldfish D. astronaut A. fix up B. come C. artist D. I'm afraid A. stalk B. paint C. awesome D. no good A. Turkey B. straggle C. World Cup D. recover A. dancer B. live C. go sightseeing D. kettle A. colossal B. employment C. dream D. affluent