He finished the job in slightly more than an hour.

Tsuyoshi is my best friend.

He is a very strong person.

His strength comes from his mental power.

I took a painkiller because I had a severe headache.

He bit into the apple.

He starts biting his nails as soon as he feels stressed.

She is planning a date with her current boyfriend.

He lost everything.

After failing, he blamed himself and was biting his own navel (figuratively expressing deep regret).