问题描述：
请找出下列句子中的错误,并改成正确的句子.
1.He is a old man.2.I haven' t find my cat.3.I reading a story book.4.He name is jack.5.Don' t is late next time.
1.He is a old man.2.I haven' t find my cat.3.I reading a story book.4.He name is jack.5.Don' t is late next time.
问题解答：
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