单选题：Ican'tfindtherecorderintheroom.It（　　）bysomebody.

题目内容：

Ican'tfindtherecorderintheroom.It（　　）bysomebody. A．musthavetaken
B．mayhavetaken
C．mayhavebeentaken
D．shouldhavebeentaken

参考答案：

答案解析：

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