4 sentences

1. 明天我会竭尽全力。

   míng​tiān wǒ huì jié​jìn​quán​lì.

   Tomorrow I will do my best.

   Source: CCMatrix

2. 我竭尽全力游了五分钟。

   wǒ jié​jìn​quán​lì yóu le wǔ fēn​zhōng.

   I swam as hard as I could for five minutes.

   Source: UM-Corpus: Spoken

3. 我们竭尽全力了，也赢了。

   wǒ​men jié​jìn​quán​lì le, yě yíng le.

   We tried our best and we won.

   Source: CCMatrix

4. 我们需要竭尽全力才能打败他们。

   wǒ​men xū​yào jié​jìn​quán​lì cái​néng dǎ​bài tā​men.

   We need to do our best to beat them.

   Source: CCMatrix