3 sentences

1. 他历任外交部长、国务委员。

   tā lì​rèn wài​jiāo bù​zhǎng, guó​wù wěi​yuán.

   He has served successively as Minister of Foreign Affairs and State Councilor.

   Source: Dong Chinese Dictionary

2. 他是教育委员会的一名委员。

   tā shì jiào​yù wěi​yuán​huì de yī míng wěi​yuán.

   He is a member of the education committee.

   Source: Dong Chinese Dictionary

3. 他在这次选举中被选为候补委员。

   tā zài zhè cì xuǎn​jǔ zhōng bèi xuǎn wéi hòu​bǔ wěi​yuán.

   He was elected as an alternate member in this election.

   Source: Dong Chinese Dictionary