3 sentences

1. 问题的一半已经解决了。

   wèn​tí de yī​bàn yǐ​jing jiě​jué le.

   Half of the problem has already been solved.

   Source: CCMatrix

2. 祝贺你，你已经解决了问题！

   zhù​hè nǐ, nǐ yǐ​jing jiě​jué le wèn​tí!

   Congratulations, you have solved the problem!

   Source: CCMatrix

3. 这些教授可能已经解开了一个47年的谜团。

   zhè​xiē jiào​shòu kě​néng yǐ​jing jiě kāi le yī​ge47 nián de mí​tuán.

   These professors may have solved a 47-year-old mystery.

   Source: CCMatrix