------Hello,Mr.Huang!---------I'm sorry ,_______I don't think I know you.

问题描述:

------Hello,Mr.Huang!---------I'm sorry ,_______I don't think I know you.
A.and
B.or
C.but
D.because

C but
习惯上的表达方式
很抱歉,但是我不认识你注意,我上面有说,习惯上的表达方式