5 sentences

1. 快递员已将包裹准时送达。

   kuài​dì​yuán yǐ jiāng bāo​guǒ zhǔn​shí sòng​dá.

   The courier delivered the package on time.

   Source: Dong Chinese Dictionary

2. 快递员正在送货。

   kuài​dì​yuán zhèng​zài sòng​huò.

   The courier is delivering packages.

   Source: Dong Chinese Dictionary

3. 快递员正在为客户派送包裹。

   kuài​dì​yuán zhèng​zài wèi kè​hù pài​sòng bāo​guǒ.

   The courier is delivering packages to customers.

   Source: Dong Chinese Dictionary

4. 门铃叮咚响了一声，大概是快递员到了。

   mén​líng dīng​dōng xiǎng le yī shēng, dà​gài shì kuài​dì​yuán dào le.

   The doorbell chimed; it's probably the courier.

   Source: Dong Chinese Dictionary

5. 快递员脚登三轮车，在狭窄的胡同里熟练地穿行。

   kuài​dì​yuán jiǎo dēng sān​lún​chē, zài xiá​zhǎi de hú​tòng lǐ shú​liàn de chuān​xíng.

   The delivery man pedaled his tricycle, skillfully weaving through the narrow alleys.

   Source: Dong Chinese Dictionary