2 sentences

1. 报销医药费需要提供原始票据。

   bào​xiāo yī​yào​fèi xū​yào tí​gōng yuán​shǐ piào​jù.

   Original receipts are required to reimburse medical expenses.

   Source: Dong Chinese Dictionary

2. 银行正在核对这些商业票据的真伪。

   yín​háng zhèng​zài hé​duì zhè​xiē shāng​yè piào​jù de zhēn​wěi.

   The bank is checking the authenticity of these commercial instruments.

   Source: Dong Chinese Dictionary