他们开垦这片土地来种植蔬菜。

They ___cultivate the land to grow vegetables.

他努力培养积极的生活态度。

He tries to ___cultivate a positive attitude toward life.

她努力培养与客户的关系以扩大业务。

She ___cultivated relationships with clients to expand her business.

他在后院里精心培育了一片玫瑰园。

He carefully ___cultivated a rose garden in his backyard.