——Do you know Anna’s telephone number?
—— . As a matter of fact, I don’t know any Anna, either.
A. I think so
B. I’m afraid not
C. I hope so
D. I’d rather not
网友回答
A. I think so
(答案→)B. I’m afraid not
C. I hope so
D. I’d rather not
解析：在情境交际中考查替代省略. 为了使交际更加简洁明了，省使用替代省略。I’m afraid not 相当于I’m afraid that I don’t know Ann’s telephone number. 比如：It’s going to rain tomorrow. I think so.=I think it’s going to rain tomorrow.