She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

Where does your younger sister live?

She is my sworn younger sister, and we are always together.

My younger paternal half sister is very smart.

My sister-in-law is a very kind person.

Where is your sister?

Vitamin B12 is an important nutrient for maintaining the health of the nervous system.

He started walking around the room in an anticlockwise direction.