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题目内容
（广东开放大学 英语语法与基础写作）
Which flight do you prefer, _______ or the business?
选择一项：
A. firstly-class
B. first-class
C. firstly class
D. first class
选择一项：
A. firstly-class
B. first-class
C. firstly class
D. first class
参考答案