The city has decided to do away with all the old buildings in its center.
 
【正确答案】 A
【答案解析】 动词词组辨析。do away with短语中的away是“离开”。选项中,set up“建立”,repair“修理”,paint“描绘”,都与“离开”无关,只有get rid of符合要求。故答案为A。