求教

edalee

110.(30191-!-item-!-188;#058&004698)

The ivory-billed woodpecker, once the largest woodpecker in North America

at a striking 20 inches tall, has moved in and out of the extinct category, with scientists consistently unable to find solid proof for the bird to still exist.

(A) for the bird to still exist

(B) for the bird as still existing

(C) for the bird's continued existence

(D) that the bird still exists

(E) of the bird and its continued existence

为什么选D啊，我选的C

edalee

有会做的NN没啊~~~

edalee

自己顶

edalee

还没有？那我再顶