单项选择题 The rapid growing population is one of the major problems（）the world．We must keep the number of people（）growing so fast in order to let our sons and grandsons live a better life．

单项选择题 The（）woman was（）to hospital by an ambulance．

单项选择题 If you find a poisoned person who has stopped breathing, clear the airway and try to get him（）．Next, （）an ambulance at once．