问题描述：
I know nothing about him ___ he is a teacher.
以下四个选项中先哪一项?
A.besides
B.in addition
C.except for
D.except that
为什么?
以下四个选项中先哪一项?
A.besides
B.in addition
C.except for
D.except that
为什么?
问题解答：
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