. My MP4 player isn’t in my bag. Where I have put it? A. canB. mustC. shouldD. would

问题补充：

. My MP4 player isn’t in my bag. Where I have put it?

A. can

B. must

C. should

D. would

答案：

(答案→)A. can

B. must

C. should

D. would

解析：can在此表推测，“can+have+过去分词”表示对过去情况的推测，主要用于否定式或疑问句中。句意为：我的MP4不在包里，我会把它放到哪里去了呢？