Considering the ing of the entrance exam，some schools have abandoned the of doing morning exercises.
A. action
B. practice
C. habit
D. custom
网友回答
A. action
(答案→)B. practice
C. habit
D. custom
解析：句意：考虑到快要到来的入学考试，一些学校放弃了做早操的惯例。action“行动”；practice“惯例，常规；实践”；habit“习惯”；custom“习俗”。由句意可知，B项正确。