3 sentences

1. 这件衣服是用真革制成的。

   zhè jiàn yī​fu shì yòng zhēn gé zhì​chéng de.

   This garment is made of genuine leather.

   Source: Dong Chinese Dictionary

2. 他因为在工作中收受贿赂被革了职。

   tā yīn​wèi zài gōng​zuò zhōng shōu​shòu huì​lù bèi gé le zhí.

   He was dismissed from his post for taking bribes at work.

   Source: Dong Chinese Dictionary

3. 这套制度太陈旧了，为了提高效率，早就该革了。

   zhè tào zhì​dù tài chén​jiù le, wèi​le tí​gāo xiào​lǜ, zǎo jiù gāi gé le.

   This system is too outdated; it should have been overhauled long ago to improve efficiency.

   Source: Dong Chinese Dictionary