He keeps an attack dog to protect his house.

Recently, there has been a sudden increase in tourists in this area.

He has a very aggressive personality.

My body can't keep up with the sudden change in temperature.

He was an eyewitness to the incident.

He headed to the battlefield with an assault rifle.

He learned how to operate a mortar.

A gap is created in the wall of the building due to the earthquake.

He made time to meet his friends by squeezing it into gaps in his busy schedule.

A gap gradually developed between him and me.