扫描二维码，直接登录
题库 / Prep2007E2-SC-32
The Chicago and Calumet Rivers originally flowed into the St. Lawrence by way of Lake Michigan, but having been redirected by constructing canals so that the water now empties into the Mississippi by way of the Illinois River.
Rivers originally flowed into the St. Lawrence by way of Lake Michigan, but having been redirected by constructing
Rivers had originally flowed into the St. Lawrence by way of Lake Michigan, but they have been redirected by constructing
Rivers, which originally flowed into the St. Lawrence by way of Lake Michigan but have been redirected by the construction of
Rivers, originally flowing into the St. Lawrence by way of Lake Michigan, but having been redirected by the construction of
Rivers, originally flowing into the St. Lawrence by way of Lake Michigan, have been redirected through the construction of
更正： B by doing sth没有逻辑主语的问题，只有分词有主语问题， by+动名词没有主语问题
登录 或 注册 后可以参加讨论