请教大牛们一道prep语法题

sandy821130

The globalization of financial-services companies has been a boon to money launderers, because of allowing money placed in a bank in a less regulated jurisdiction to be transferred to a branch in a more regulated one.
A. of allowing money placed in a bank in a less regulated jurisdiction to be transferred
B. of allowing the transfer of money placed in a bank in a less regulated jurisdiction
C. it allows that money placed in a bank in a less regulated jurisdiction is transferred
D. it allows the transfer of money having been placed in a bank in a less regulated jurisdiction
E. it allows money placed in a bank in a less regulated jurisdiction to be transferred
正确答案是A，我选了E，因为because of后面不是应该跟简单的名词吗？

sandy821130

实在抱歉，搞错题了，一个该如下：
The Acoma and Hopi are probably the two oldest surviving Pueblo communities, both dating back at least a thousand years.
A. both dating
B. both of which have dated
C. and each has dated
D. and each one dating
E. each one of which date
我选了C，正确答案是A，both dating用来修饰 Acoma and Hopi的吗？

HarrisZheng

这是个独立主格

pron + ving 是独立主格的一种形式