That accident was caused by his lack of attention.

His actions led to the problem.

He used a rail spike to secure the rail.

He is very famous in the world of entertainment.

My female dog is very smart.

Hyenas prey on herbivores in Africa.

He is excited to learn a new programming language.

By learning the C language, you can understand the basics of programming.

He is good at learning foreign languages.

He was struggling to understand his internal language.