问题描述：
we put off the meeting.________________.
A.BOBO was ill.
B.As BOBO was ill.
C.BOBO being ill.
D.BOBO is ill.这个独立主格的结构答案是C.那B为什么不可以呢?
as 就不能理解成因为了？
A.BOBO was ill.
B.As BOBO was ill.
C.BOBO being ill.
D.BOBO is ill.这个独立主格的结构答案是C.那B为什么不可以呢?
as 就不能理解成因为了？
问题解答：
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