2 sentences

1. 他的任期已届满。

   tā de rèn​qī yǐ jiè mǎn.

   His term of office has expired.

   Source: Dong Chinese Dictionary

2. 他的总统任期将于明年届满。

   tā de zǒng​tǒng rèn​qī jiāng yú míng​nián jiè​mǎn.

   His presidential term will expire next year.

   Source: Dong Chinese Dictionary