He was killing time by reading a book while waiting.

I jog for half an hour every day.

As the time limit approached, I began to panic.

The bull shark is one of the most dangerous species among marine life.

Restoring this old house is a tough job.

I will return home.

He can't learn from his mistakes, just like the proverb 'not returning to the water jar after drinking'.

He attacked the enemy using a flamethrower.

Every Friday is the day for the early bird quiz.

We conduct group activities at school.