--I left my handbag on the train, but luckily someone gave it to a railway official.
--How unbelievable to get it back! I mean, someone it.
A. will have stolen
B. might have stolen
C. should have stolen
D. must have stolen
网友回答
A. will have stolen
(答案→)B. might have stolen
C. should have stolen
D. must have stolen
解析：考查情景交际和时态。句意：--我把手提包落在火车上了，但是，幸运的是，有人把它送到了铁路办公室。--能重新找回真是难以置信！我是说，有人可能已经偷走了它。may/might have done可能已经做了某事；should have done本应该做某事（实际上未做）；must have done一定已经做了某事。根据情境可知，手提包没有被偷，这里只是一个不确定的推测，因此不选D。故选B。