It is the second time that he has won the race, has surprised us all.
A. which
B. where
C. what
D. that
网友回答
(答案→)A. which
B. where
C. what
D. that
解析：考查非限制性定语从句：句意：这是他第二次赢得比赛 ，这让我们都很惊讶。which引导非限定性定语从句代指前面整个句子，在定语从句中which充当主语，where不能做主语，what不能引导定语从句，that不能引导非限制性定语从句，选A。