This is the original passage .

 My name is Christopher . I am 16 years old and I come from Lancaster , England . I live at home with my family-my mother , my father , my brother and sister and my goldfish . I have lots of hobbies . I like football and swimming , and I sometimes go fishing with my friends at the weekend . I am still at school . I am in the fifth year at a very big comprehensive school. There are about 2,000 pupils there . I am not sure what I am going to do when I leave school.

 This is the Christopher text after Find and Replace.

 My name is Christopher . He am 16 years old and He come from Lancaster , England . He live at home with my family-my mother , my father , my brother and sister and my goldfish . He have lots of hobbies . He like football and swimming , and He sometimes go fishing with my friends at the weekend . He am still at school . He am in the fifth year at a very big comprehensive school. There are about 2,000 pupils there . He am not sure what He am going to do when He leave school.

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This is the Christopher text after correcting the third person verb forms.

 His   name is Christopher . He is  16 years old and he comes from Lancaster , England . He  lives at home with his family-his mother , his father , his brother and sister and his goldfish . He has lots of hobbies . He likes football and swimming , and he sometimes goes fishing with his friends at the weekend . He is still at school . He is in the fifth year at a very big comprehensive school. There are about 2,000 pupils there . He is  not sure what He is going to do when he leaves school.