问题
选择题
travel can broaden your mind, I don't think it's a good idea to spend too much time and money on it . [ ]
A. If
B. While
C. Because
D. As
答案
答案：B
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travel can broaden your mind, I don't think it's a good idea to spend too much time and money on it . [ ]
A. If
B. While
C. Because
D. As
答案：B