---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：考查虚拟语气。根据语境可知，事实上，手提包失而复得。因此，最后一句“手提包本来有可能被偷走”是与过去事实相反的假设，故选B。A项是将来完成时；C项表示本来应该做某事但是上没做；D项表示对过去的肯定的猜测。