After the sudden crash, the trader scrambled to meet multiple margin calls.

At the outdoor concert, several people had to leave early to answer calls of nature.

During the long meeting, I was distracted by a sudden call of nature and quietly slipped out to use the restroom.

The chairperson calls to order the emergency meeting at nine sharp.

At nine sharp, the mayor will call to order the council meeting.

The chair, calling to order the restless attendees, tapped the gavel lightly.

At the antique fair, she discovered a box of faded calling-cards tucked behind old photographs.

The repeated wakeup calls from climate scientists finally pushed the government to adopt stricter regulations.

The failed audit served as a harsh wakeup call for the company.

When the room fell silent, the chair called to order the meeting and everyone turned their attention forward.