—When did you come back?—Half an hour ago. You ____ to music.A．have been listeni

题干

—When did you come back?
—Half an hour ago. You ____ to music.

A．have been listening	B．were listening
C．had listened	D．listened

上一题下一题 0.65难度单项选择更新时间:2013-05-24 08:16:54

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