A. those B. close C. electrode D. extend A. introduction B. grievance C. various D. key A. head teacher B. sincerely C. middle D. publish A. quickly B. side C. congestion D. storeroom A. acre B. try out for C. slowly D. wounded A. centre B. heroine C. organ D. immensity A. dome B. building C. pneumonia D. altitude A. follow B. up to standard C. sight D. cheap A. else B. athlete C. cry D. chasm A. schedule B. down C. junior high school D. bathe