8.A girl ______ my pen fall off the table when she _____ me.a.saw,passed b.was seeing,passed c.was seeing,passed d.was s
问题描述：
8.A girl ______ my pen fall off the table when she _____ me.a.saw,passed b.was seeing,passed c.was seeing,passed d.was seeing,was passing 为什么选a不选b他不是现在进行时吗?
答
时态一致fall是fell的过去式 when前面不能跟doing