He tried to get someone to the old worker but could find none.A in place ofB instead ofC

问题补充：

He tried to get someone to the old worker but could find none.

A in place ofB instead ofC take the place ofD take place

答案：

解析：考察固定搭配。A代替（介词短语）；B代替，而不是；C代替（动词短语）；D发生；句意：他努力让人代替那个老工人，但是没有能够找到。固定搭配get sb to do sth让某人做某事；句中的to后面要接动词原形。故C正确。