---- you ever Tom before ?
---- No, I him just two minutes ago.
A. Did, know ; met
B. Have, known ; have met
C. Have, known; met
D. Did, know; had met
网友回答
A. Did, know ; met
B. Have, known ; have met
(答案→)C. Have, known; met
D. Did, know; had met
解析：题中有before，强调对现在造成的影响，所以用现在完成时；题中有ago强调事情发生在过去，故用过去时，故选C.