quit it

例句：

1. 1. I need to quit smoking to improve my health.
   我需要戒烟以改善我的健康。
2. 2. The company decided to quit the market due to poor performance.
   由于表现不佳，公司决定退出市场。
3. 3. They have quit their previous job and are now looking for a new one.
   他们已辞去之前的职位，正在寻找新的工作。