再问gwd15-1

According to analysts, an alliance between three major personal computer companies and most of the nation’s largest local telephone companies would enable customers to receive internet data over regular telephone lines with speeds much higher than is currently possible.

A.      with speeds much higher than is

B.       with speeds that are much higher than are

C.      at much higher speeds as are

D.      at much higher speeds than that

E.       at speeds much higher than are

正确答案选E

他们说THAN之后要补出谓语动词。那么如果要补充完整的话，with speeds much higher than are currently possible 应该加点什么呢？

没人知道吗