问题描述：
he must have done it yesteraday,――?he must have done it for 2 years ――?
he must have done it yesteraday,――?he must have done it for 2 years ――?he must have been here yesterday――?he must have been here for 2 years――?这几个反义疑问句题咋做,顺边讲解下,
he must have done it yesteraday,――?he must have done it for 2 years ――?he must have been here yesterday――?he must have been here for 2 years――?这几个反义疑问句题咋做,顺边讲解下,
问题解答：
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