A. meal B. manner C. Korea D. at once A. girlfriend B. smart C. classroom D. elbow A. contract B. relaxed C. blister D. luggage A. aphid B. dare C. make an effort D. assemble A. evidently B. bare C. perturb D. drop by A. pizza B. get mad C. be late for D. foreign A. hami melon B. northern C. dacing D. brain A. talk quietly B. exchange C. thumbs-up D. apple A. greengrocer B. billion C. sixth D. greet A. precaution B. storeroom C. dried food D. clean off