高等继续教育 / 经贸英语
正确率：100%
题型描述: 单选题
We have seen your advertisement ＿＿＿＿ portable typewriters in South China Morning Post.
A.in
B.for
C.on
D.at
We have seen your advertisement ＿＿＿＿ portable typewriters in South China Morning Post.
A.in
B.for
C.on
D.at
参考答案：
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