问题
选择题
Zhongdian is 659 kilometers away from Kunming, and there are ______ flights between the two cities.[ ]
A. usual
B. extraordinary
C. regular
D. common
答案
答案：C
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Zhongdian is 659 kilometers away from Kunming, and there are ______ flights between the two cities.[ ]
A. usual
B. extraordinary
C. regular
D. common
答案：C