Students in this school don’t have classes on Wednesday afternoon, which is , for teachers have a meeting.
A. practice
B. action
C. experience
D. sense
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(答案→)A. practice
B. action
C. experience
D. sense
解析：考查名词的意思；A. practice 练习，惯例 B. action 行动 C. experience 经验，经历 D. Sense 感觉
“这所学校的学生周三下午不上课，这是惯例，因为老师们开会”