题目内容：
听下面一段对话，回答第67和第68两个小题。What has the man been doing?
A. Writing a book.
B. Reading a book.
C. Advertising a book.
参考答案：
答案解析：
单选题：听下面一段对话，回答第67和第68两个小题。What has the man been doing?A. Writing
- 题目分类：英语
- 题目类型：单选题
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What has the man been doing?
A. Writing a book.
B. Reading a book.
C. Advertising a book.