A. though B. make mistakes C. stair D. tennis A. interrupt B. hang out C. incur D. around the world A. balance B. plant C. acre D. strengthen A. dam B. twice C. manners D. bedtime A. orderly B. obtain C. intend D. organize A. steer B. gymnasium C. ruler D. act A. depressed B. loudly C. cancer D. ready to do A. AIDS B. schoolwork C. unrelenting D. impose A. less than B. fit for C. special offer D. crack A. ask for help B. ticket C. quintuplet D. correct