If the operation ________ carefully prepared, it would not have been successful.
C
语法题：虚拟语气。
支持代孕的理由有
Theboycomplained_______apaininhisstomach.
Themeeting_____nextweekwillbeofgreatimportance.
AtanyrateIdidnotsucceed_______myselfunderstoodbyyou.
His intelligence will ________ him to get a scholarship to college.
