问题描述：
sat语法题帮我改
Each time Mary turns on her computer,she has (A) to enter a company code,then her initials,and then enters a password (B) before (C) she can begin working (D).怎么改?
Each time Mary turns on her computer,she has (A) to enter a company code,then her initials,and then enters a password (B) before (C) she can begin working (D).怎么改?
问题解答：
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