A. let B. evidence C. comet D. ozone layer A. lost B. sorghum C. experiment D. carbon A. sleeping bag B. sports day C. coconut D. astronomy A. sort B. religion C. agree D. I dare you A. get the hang of B. version C. icy D. acrobatic A. scratch B. crash C. intelligent D. cinquain A. astronomer B. assistant C. donate D. good morning A. speed up B. atmosphere C. isn't D. sensational A. terrify B. acid C. fake D. regiment A. donut B. break out C. knot D. climber