改正When we saw Maria this afternoon,she has already had a hair cut
问题描述：
改正When we saw Maria this afternoon,she has already had a hair cut
When we saw Maria this afternoon,she has already had a hair cut.错在哪怎么改
Before you arrived ,I have prepared anything you need.错在哪怎么改
答
When we saw Maria this afternoon,she has（had） already had a hair cut.错在哪怎么改
Before you arrived ,I have（had） prepared anything you need.错在哪怎么改
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