问题
选择题
_____ he is the son of' the boss, he started from the lowest position as a common employee.[ ]
A. Unless
B. Since
C. While
D. As
答案
答案：C
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_____ he is the son of' the boss, he started from the lowest position as a common employee.[ ]
A. Unless
B. Since
C. While
D. As
答案：C
