学校开展了文化活动。

Xuéxiào kāizhǎnle wénhuà huódòng.

The school has organized cultural activities.

公司将开展新产品发布会。

Gōngsī jiāng kāizhǎn xīn chǎnpǐ fābùhuì.

The company will hold a new product launch event.

社区开展了环保宣传活动。

Shèqū kāizhǎnle huánbǎo xuānchuán huódòng.

The community has launched environmental awareness activities.