问题描述：
用for或since把句子改为现在完成时
问题解答：
我来补答
has been away from since 再答： has been dead for
再答： has been on since
再答： has had since
再答： has been member of since
再答： has been in for
再问：
再问：
再答： 采呢
再问： 👌
再问： 教我
再答： has been on since
再答： has had since
再答： has been member of since
再答： has been in for
再问：
再问：
再答： 采呢
再问： 👌
再问： 教我
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