After a long and gruesome season, Jeff Wills has been performing ______ better since the playoffs started a week ago.
 
【正确答案】 D
【答案解析】 经过一个漫长而可怕的赛季,杰夫·威利斯自上周开始的季后赛以来,一直表现得十分出色。横线处需要填入修饰形容词比较级“better”的副词,因此答案是D。