goodyear2013 wrote:
The city has proposed a number of water treatment and conservation projectsthe cost of which raises water bills high enough so that even environmentalists are beginning to raise alarms.
A) the cost of which raises water bills high enough so that
B) at a cost raising water bills so high that
C) at a cost which raises water bills high enough so
D) whose cost will raise water bills so high that
E) whose cost will raise water bills high enough so that
Hi, can anyone explain what is wrong with B
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