（用所给词的适当形式填空）1.I---- (not see) him since he ---- (leave) sch

学习时间:2026-03-30 20:45:20 阅读：5511

（用所给词的适当形式填空）1.I____ (not see) him since he ____ (leave) school.2.It ____ (be) five years since we last ____ (see) each other.

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2026-03-30 20:45:20

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1。haven't seen, left2。is/ has been , saw 再问： since后面的动词也要用过去式吗？再答：是的, since后面的动词必须要用过去式。