Much attention should be paid the wild animals as many of them are dying out.A. protectB.

问题补充：

Much attention should be paid the wild animals as many of them are dying out.

A. protect

B. to protect

C. protecting

D. to protecting

答案：

A. protect

B. to protect

C. protecting

(答案→)D. to protecting

解析：考查短语搭配。本题考查pay attention to注意，to为介词，故选D。句意：更多的关注在野生动物上，因为他们许多将要灭绝。