He said 'thank you'.

He is studying late into the night to learn a new computer language.

Learning Modern English is important for smooth international communication.

He is interested in the study of constructed languages.

He remained silent and didn't say anything.

He is an expert in sociolinguistics.

I am very interested in sociolinguistics.

He is attending a programming school to learn object-oriented languages.

Our company is outsourcing some of its operations.

We decided to outsource this project.