He was behaving as if he was crazy.

He is doing a special exercise to strengthen his sternohyoid muscle.

When will this pain end?

He found forensic evidence.

He is a world-renowned ichthyologist.

Looking up at the Big Dipper, I feel at peace.

Life is a series of vicissitudes.

He felt cognitive dissonance between his actions and beliefs.

He arrived in Tokyo yesterday.

Did you hear his voice?