done their possible的用法和樣例：
例句
用作動詞 (v.)
- The children were doing their best to display casual indifference to the event.
孩子們正在竭盡所能表現出對這件事漠不關心的樣子。 - Yi definitely has that, and after watching him play on Friday, you can bet the Bucks will make every effort possible to sign him next season.
通過周五的比賽可以看出易建聯的確有這些特點，我敢打賭雄鹿會在下賽季竭盡所能簽下他。
