The changes made in the working conditions at our company resulted in remarkable improvements in all aspects of our business and ______ more so in the morale of our employees.
 
【正确答案】 C
【答案解析】 横线后的more在解题时起关键作用。横线位于比较级前，由此可以判断应填入修饰比较级的副词。此类副词有even，much，a lot等。