what do you think of the basketball yesterday?— It is the most exciting on I ( ).

问题描述:

what do you think of the basketball yesterday?— It is the most exciting on I ( ).
A.watch B.watched C.have watched

答案选C.have watched
这是我所看过的最激动人心的一场篮球赛了.请问 B 答案的过去式为什么不行啊 ?时态不对,这里要用过去完成时态,表示到回答者回答这时为止。