My MP4 player isn't in my bag. Where ____ _I have put it?

My MP4 player isn't in my bag. Where ____ _I have put it?
A、can
B、must
C、should
D、would
【正确答案】：A
【题目解析】：【考点点击】本题考查情态助动词can的推测意义的用法。【要点透析】句意:我的MP4不在包里,我可能把它放在哪里了呢?can表示可能性,符合句意;must与完成体连用时表推测,不用于疑问句;而 should和 would的完成体不合句意。