SAT语法真题请教!1.(We had never seen) anything like this style of architecture before,we thought we were looking at giant sculptures,not buildings.D) Never having seenE) Never seeing为什么E选项错了?2.Remarkable breakthroughs in gene research may lead to dramatic changes in medical (treatment,where it may be possible to create) drugs tailored to a patient's genetic makeup.C treatment by making it possible to createD treatment taht makes it possible creatingE treatm

SAT语法真题请教!
1.(We had never seen) anything like this style of architecture before,we thought we were looking at giant sculptures,not buildings.
D) Never having seen
E) Never seeing
为什么E选项错了?
2.Remarkable breakthroughs in gene research may lead to dramatic changes in medical (treatment,where it may be possible to create) drugs tailored to a patient's genetic makeup.
C treatment by making it possible to create
D treatment taht makes it possible creating
E treatment that makes possible creating
为什么选C,那D和E哪里错了?
3.Cinco de Mayo,or May 5,the date of a famous military victory,is celebrate (with such an activity as) dancing,speeches,musical performances and feasts.
C)with such activities as
D)in such activities like
D哪里错了?