2 sentences

1. 我很疑惑。

   wǒ hěn yí​huò.

   I'm confused.

   Source: OpenSubtitles

2. 面对这突如其来的变化，他感到非常疑惑。

   miàn​duì zhè tū​rú​qí​lái de biàn​huà, tā gǎn​dào fēi​cháng yí​huò.

   Faced with this sudden change, he felt very confused.

   Source: Dong Chinese Dictionary