A. pollution B. rush C. policeman D. screw A. keep in touch B. teeth C. twelve D. lip A. lay eggs B. pertinent C. all one's life D. in fear of one's life A. Kivu B. black C. seriously D. improve A. factory B. chip C. Olympic D. do exercise A. best-seller B. primary C. ouch D. service A. wife B. cattle C. danger D. savage A. watertight B. before C. inheritance D. umbrella A. burglar B. annoyed C. open space D. surface A. desert B. stick to C. abroad D. October