I am disappointed because I my favourite writer yet.
A. didn’t see
B. haven’t seen
C. don’t see
D. have not been seeing
网友回答
A. didn’t see
(答案→)B. haven’t seen
C. don’t see
D. have not been seeing
解析：考查时态。句意：我很失望，因为我还没有见到我最喜欢的作家。yet还没，尚未，常与现在完成时连用。发生在过去的动作，对现在造成了影响，用现在完成时have/has done。故选B。