Fundamental interaction is one of the most important forces in physics.

Frederick is my best friend.

She was playing with bubbles while taking a bath.

It is important for us to secure basic necessities of life such as clothing, food, and housing.

Her face was shining with ecstasy.

He chose this town as a foothold for his new business.

His face was full of happiness.

Yesterday, a traffic accident occurred near me.

He is in his unlucky year, so he needs to be particularly careful.

He was wrapping the present.