A. nail B. ahead C. dangerous D. naval A. lot B. excursion C. timetable D. stretch A. eliminate B. not until C. species D. crowded A. equipment B. air conditioning C. lesson D. thoughtful A. inadequate B. unhurt C. habit D. tree A. carry B. physician C. zipper D. finally A. Greenwich B. build C. but D. ransom A. build sb up B. phenomenon C. compound D. Wristies A. go ahead B. put away C. smooth D. socks A. themselves B. me C. motivation D. ashamed