填 since
since then 从那以来
It has been a long time_ then
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相关问题
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It's a long time since还是It has been a long time since
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It has been a long time since ...句型
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it has been a long time. what is up
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It _______ that he has been ill for a long time. [
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It _____ that he has been ill for a long time.
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It _____ that he has been ill for a long time.
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It ___________ that he has been ill for a long time.
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It ___that he has been ill for a long time
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关于since It has been a long time since I was happy last time.
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it has been a long time since+?since后面加什么形式?