If you find a poisoned person who has stopped breathing, clear the airway and try to get him ________．Next, ________ an ambulance at once．
A.breathe; call forB.breathing; call onC.breathe; call upD.to breathe; call for在线课程D
解析：
get sb．doing/to do使某人做某事；
call for叫(车)；
call on拜访；
call up给……打电话。