2 sentences for 抑或 (yì​huò)

1. 这是出于真心，抑或只是客套？

   zhè shì chū​yú zhēn​xīn, yì​huò zhǐ shì kè​tào?

   Is this out of sincerity, or just a polite gesture?

   Source: Dong Chinese Dictionary

2. 抑或他根本就没有收到那封信？

   yì​huò tā gēn​běn jiù méi​yǒu shōu​dào nà fēng xìn?

   Or perhaps he didn't receive the letter at all?

   Source: Dong Chinese Dictionary