my cousin used to like sports and he took an ____ part in it.(activity)

问题描述:

my cousin used to like sports and he took an ____ part in it.(activity)

My cousin used to like sports and he took an (active) part in it.(activity)
解析:此处需要填activity的形容词形式——active,修饰名词part.
句意:我的堂弟过去喜欢运动,而且他也积极参加于其中.