sat-oc 完善句子

题目

sat-oc 完善句子
Born Charles Hardin Holley,Buddy Holly recorded
some of the most distinctive and influential songs in
rock-and-roll music,which includes such classics as
“That'll Be the Day,” “Rave On,” and “Peggy Sue.”
(A) which includes
(B) they include
(C) also including
(D) including
(E) these include
The Pony Express was an ingenious system for
carrying mail; it was in existence only briefly,
however,before the telegraph system made it
obsolete.
(A) mail; it was in existence only briefly,
however,
(B) mail,for it was in existence only briefly,
however,
(C) mail; however,existing only briefly
(D) mail,having existed only briefly
(E) mail,but was existing only briefly
A,E为啥不对

答案

1. 用排除法
缩句后：Holly recorded some songs, including blah blah blah.
其他答案显然都不合语法.
2. E的错误：Exist表示一种“存在”的状态.没有“be existing” (正在存在) 的说法.