He is my online friend, and we play online games every day.

This bacteria can be killed by heat.

This food has been heat-treated to kill bacteria.

He prayed fervently for his sick friend.

He prayed earnestly for his sick mother.

Walking on the hot sand is very difficult.

His plan is gradually unfolding.

The Dow Jones Industrial Average has dropped significantly.

The shape of this root is very unique, isn't it?

It is important to brush your teeth every day using toothpaste.