He underwent surgery on his jejunum.

He felt a lack of balance in his body and decided to see a doctor.

Today is my father's deathday.

Learning how to use English articles is difficult.

We are under 24-hour surveillance.

We observed the phenomenon all night long.

He used to work in an ancient government office.

The patrol boat is patrolling the sea area.

He used forceps to remove the small parts.

My Chinese zodiac sign is the horse.