This is the first time that I it.
A. see
B. saw
C. had seen
D. have seen
网友回答
A. see
B. saw
C. had seen
(答案→)D. have seen
解析：考查固定句型中的时态。固定句型：It is/was the 序数词 time that sb 现在完成时/过去完成时…；句意：这是某人第几次做某事的时候了。如果前面是is,后面使用现在完成时；如果前面是was，后面使用过去完成时。本题前面的is,说明后面使用现在完成时。故D正确。