Much attention should be paid ________ the wild animals as many of them are dying out．
A.to protectingB.to protectC.protectingD.protect在线课程A
本题考查短语should pay(much/little/no…)attention to…被动形式应为(much/little/no…)attention should be paid to…, to是介词，后面接v．-ing形式。