求助GWD6-7关于完成时

Tiffany1003 · 发表于 2006-11-17 03:50:00

Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve metropolitan Boston.

Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve
Concerns about public health have led to the construction of three separate sewer systems between 1876 and 1904 to serve
Concerns about public health have led between 1876 and 1904 to the construction of three separate sewer systems for serving
There were concerns about public health leading to the construction between 1876 and 1904 of three separate sewer systems serving
There were concerns leading between 1876 and 1904 to the construction of three separate sewer systems for serving between不是表示一个时间段，为什么不选C用完成时呢？

jinyiming · 发表于 2006-11-17 06:25:00

between 1876 and 1904的位置不对，意思有变。

daniel_lew · 发表于 2007-10-30 22:15:00

为什么要用完成式呢？

本贴相关题目 GMATPrep-2008E1-SC-237 | TN-04-SC-17GMATPrep-2008E1-SC-237 |
TN-04-SC-17
TN-06-SC-16
... (DVEY)