【题目】–You’re wearing your new sunglasses again! But you said you had lost it on the train!
–Unbelievable, right? Someone _____ it．
A． will have stolen B． might have stolen
C． should have stolen D． must have stolen
在线课程【答案】B
【解析】考查动词的时态。句意：你又换一副眼镜，听说你把原来的那副丢在火车上了。太难以置信吧，肯定有人偷了。根据 Unbelievable,可知表示推测，但，语气又没有那么强烈，故选B项。