He often forgets himself because he is too absorbed in his work.

He accepted the challenge with an audacious attitude.

I was surprised by his audacious attitude.

He passionately discussed the problem of other minds in his philosophy class.

We must cooperate to solve this problem.

He finally came to after losing consciousness.

We speak Tsugaru dialect.

He is sticking to his beliefs.

He is a member of the air force.

The government troops were dispatched to repel the rebels.