孩子们在公园里追逐蝴蝶。

The children ___chase butterflies in the park.

他正在追逐职业晋升的机会。

He is ___chasing a promotion at work.

他花了一年时间追求那位女同事，终于赢得了她的芳心。

He spent a year ___chasing his female coworker before finally winning her heart.

狗不停地叫，终于把那只猫赶跑了。

The dog kept barking and finally ___chased the cat away.