4 sentences

1. 句读之不知，惑之不解。

   jù dòu zhī bù zhī, huò zhī bù​jiě.

   Unable to punctuate correctly and unable to resolve confusion.

   Source: Dong Chinese Dictionary

2. 在真理面前，他心中已不再有惑。

   zài zhēn​lǐ miàn​qián, tā xīn​zhōng yǐ bù zài yǒu huò.

   Faced with the truth, he no longer had any doubts in his heart.

   Source: Dong Chinese Dictionary

3. 孰能无惑？

   shú néng wú huò?

   Who can be without doubts?

   Source: Dong Chinese Dictionary

4. 这种突如其来的变故让他感到有些眩惑。

   zhè zhǒng tū​rú​qí​lái de biàn​gù ràng tā gǎn​dào yǒu​xiē xuàn huò.

   This sudden change left him feeling somewhat dazed.

   Source: Dong Chinese Dictionary