中国石油大学 / 中石油
正确率：100%
28. A: How do you do? B: ______________ .
A、You are so kind.
B、How do you do
C、What about you?
D、How about you?
A、You are so kind.
B、How do you do
C、What about you?
D、How about you?
参考答案：
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