Question

——I can’t find my MP4 player.
—— You _______it on the desk. I saw a red one on it.

A．might have put

B．can put

C．need have put

D．must put

Answer 1

A

考查情态动词。根据句意可知对过去事情的推测，故用情态动词 + have done，might have done可能做，故选A。