Iftheoperation________carefullyprepared,itwouldnothavebeensuccessful.
A、wasnotC
语法题：虚拟语气。
Thefurnitureinherbedroomisquitedifferentfrom________inthelivingroom.
Theypreferto_______therestofthemorningwalkinginthegarden.
Hewouldhavegivenyoumorehelp,ifhe________sobusy.
Theprofessoraskedaquestion,andDavid________agoodanswer.
AtanyrateIdidnotsucceed_______myselfunderstoodbyyou.
