He always keeps a smile on his face.

This area has plenteous natural resources.

This area has plenty of natural resources.

I'm always amazed by his extensive knowledge.

He was holding my hand tightly.

He was running while holding a bag.

He always carries an umbrella around.

Yutaka is my best friend.

She was always striving for a rich life.

He has a wealth of scientific knowledge and is always excited about new discoveries.