The three foreigners seemed puzzled and looked embarrassed.
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So, you see, it's necessary for us to learn different cultures in different countries.
A. 重要的
B. 礼貌的
C. 必要的
excursion _________
A. 练习
B. 借口
C. 远足
However, Kevin said "no" to the organizer because he had arranged to do something with one of his few friends.
A. 组织者
B. 冒险者
C. 游行者
arrange _________
A. 作决定
B. 作安排
C. 作准备