几道语法题请教，请各位牛人解答，谢谢！

willjackson

1、One of Arthur Jessop’s first acts as president of the FHA was to deny a request from the private sector that federal home loan programs should be expanded to cover houses not conforming to civil construction codes.
(A) should be expanded to cover houses not conforming to
(B) be expanded to cover houses not conforming to
(C) should be expand to cover houses not conforming with
(D) would have been expanded to cover houses not conforming to（B）
(E) had to be expanded to cover houses not conforming with

我选了A

2、Marketing researchers have found that, because many residents of the Southeast do not share the same ethnic heritage as Northeasterners, the two varieties of commercially prepared coleslaw most popular in New York City and Boston are virtually ignored by consumers in Richmond and Raleigh.
(A) because many residents of the Southeast do not share the same ethnic heritage as
(B) because many residents of the Southeast do not share the same ethnic heritage with
(C) because many residents of the Southeast do not have the same ethnic heritage as
(D) due to many residents of the Southeast not sharing the same ethnic heritage with（C）
(E) whereas many residents of the Southeast do not share the same ethnic heritage as             我选了B，我不知道same是否可以与as连用

3、To maintain a high demand for their product, the manufacturers first took over the marketing and sales functions previously performed by outside agents; next, they began changing their advertising campaigns monthly to keep pace with the rapid changes in consumers’ lives.
(A) they began changing
(B) this began changing
(C) the former began changing  
(D) to begin changing（A）          我选了C，我觉得第二句的they可能会造成歧义
(E) to change

4、Ideally, the professional career diplomat should help in the ongoing maintenance of an effective American foreign policy despite changes in administration.
(A) in the ongoing maintenance of
(B) in the maintaining of
(C) maintain
(D) to maintain and continue（C）   我选了A，不太懂
(E) the maintenance of

overmatch

第一道题目：作为request的内容，要用虚拟语气，而虚拟语气的should是一定要省略的。
第二道题目：同求解：share with 错在哪里
第三道题目：按照OG上类似题目的说法，分号前后要平行结构。文中前半句的主语是the manufacturers，所以后半句的主语也应该是the manufacturers,然后可以用they来代替。这不会引起歧义。
第四道题目：miantain本来就还有持续的意思，所以ongoing, continue是语义重复，应该去除。然后动词优于名词，特别是抽象名词，这样更简洁。所以题中用动词maintain。help可以加to也可以不加to。