2 sentences

1. 我们公司今年将去上海参展。

   wǒ​men gōng​sī jīn​nián jiāng qù Shàng​hǎi cān​zhǎn.

   Our company will participate in an exhibition in Shanghai this year.

   Source: Dong Chinese Dictionary

2. 他曾多次在中南海参加重要外事活动。

   tā céng duō cì zài Zhōng​nán​hǎi cān​jiā zhòng​yào wài​shì huó​dòng.

   He has participated in important foreign affairs activities at Zhongnanhai on many occasions.

   Source: Dong Chinese Dictionary