请教高手文法

amyt

1.Although it was once funded entirely by the government, the Victoria and Albert Museums was (one of the first of Britain’s national museums seeking support from) corporations and private donors and to increase income by increasing attendance.

ANS.  among the first of Britain’s national museums to seek support from
请问为何一定要用among?（并不知道有3个以上）

2.(Unlike A,B and other expatriates, C insisted )that ………
原句为答案
另一选项Contrary to A,B and other expatriates, it was C who insisted …
请问为何不能用Contrary to不同种类的比较并用分裂句？

3.Although it claims to delve into political issues, television can be (superficial if the three major networks all) broadcast exactly the same statement from a political candidate.
ANS. superficial, as when the three major networks each
为何原句不对？ 动词是 broadcast 可以用each?