搜了半天也没搜到关于这道题的讨论。。。 GWD-8-Q16: GWD-13-15 Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve metropolitan Boston. A. Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve B. Concerns about public health have led to the construction of three separate sewer systems between 1876 and 1904 to serve C. Concerns about public health have led between 1876 and 1904 to the construction of three separate sewer systems for serving D. There were concerns about public health leading to the construction between 1876 and 1904 of three separate sewer systems serving E. There were concerns leading between 1876 and 1904 to the construction of three separate sewer systems for serving
答案:A, 令我不解的是the construction,between 1876 and 1904 ,of three separate sewer systems 这三部分的排序有什么说法么?B之所以错是因为不可以用have led to这个现在完成时么?谢谢! |