34.I can't find the recorder in the room.It __by somebody.A.may have been taken awayB.may leaveC.may take awayD.must have taken away我认为D,

34.I can't find the recorder in the room.It __by somebody.
A.may have been taken away
B.may leave
C.may take away
D.must have taken away
我认为D,

1.首先（by somebody）,被带走要用被动语态
2.I can't find the recorder in the room我不能找到它,但不能肯定是被别人带走,所以用.may 可能,是种猜测
3.我不能找到它对后来产生影响,所以用完成时
综上,选A

D不对的啊，要用被动语态撒~ 所以只能选A了~~~ 完成时的被动语态嘛~