2 sentences

1. 请务必保留好发票的原件。

   qǐng wù​bì bǎo​liú hǎo fā​piào de yuán​jiàn.

   Please be sure to keep the original copy of the invoice.

   Source: Dong Chinese Dictionary

2. 请将您的身份证原件交给工作人员。

   qǐng qiāng nín de shēn​fèn​zhèng yuán​jiàn jiāo​gěi gōng​zuò rén​yuán.

   Please hand your original ID card to the staff member.

   Source: Dong Chinese Dictionary