精选优质文档-倾情为你奉上基础巩固单句语法填空1The species that fail to adjust to the changing condition of existence will gradually become extinct.2The doctors distributed the medicines to the people in the flooded area.3Ask not what your country can do for you but what you can do for your country.4After supper，he usually stood near the window，from where he could see the tower，the tallest building in this city.5During the last three decades，the number of people participating (part
