It is the second time that he has won the race has surprised us all.A. whichB. whereC.

问题补充：

It is the second time that he has won the race, has surprised us all.

A. which

B. where

C. what

D. that

答案：

(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。