Sentences with At Once

The fire alarm rang loudly, and the students evacuated the building at once.

As soon as the thunder rumbled, the campers packed their belongings and left the forest at once.

Upon hearing the news of the accident, the rescue team rushed to the scene at once.

The referee blew the whistle, and both teams started playing the final match at once.

After receiving the urgent call, the detective headed to the crime scene at once.