4 sentences

1. 你是否怀疑我的诚意？

   nǐ shì​fǒu huái​yí wǒ​de chéng​yì?

   Do you doubt my sincerity?

   Source: CCMatrix

2. 即使是批评者也肯定他的诚意。

   jí​shǐ shì pī​píng​zhě yě kěn​dìng tā de chéng​yì.

   Even his critics acknowledge his sincerity.

   Source: CCMatrix

3. 那一刻，我感受到了他的热情，他的善良，他的诚意。

   nà yī kè, wǒ gǎn​shòu dào le tā de rè​qíng, tā de shàn​liáng, tā de chéng​yì.

   At that moment I felt his passion, his kindness, his sincerity.

   Source: CCMatrix

4. 要诚心诚意许一个愿望。

   yào chéng​xīn​chéng​yì xǔ yī​ge yuàn​wàng.

   You need to make a wish with all your heart.

   Source: OpenSubtitles