Once opened, we still don't know how to close them.

Even in its later years, it was opened once or twice a week.

Once opened, the bottle should be used inside a month.

The roof may only be opened once during a game.

Surely she did not once open her eyes and focus upon me!

The collection was opened to the media once and has since been open only to researchers.

Once opened and kept cold, the oysters can last several hours.

Each new office followed the same model as the original, providing information, support and response services once opened.

The film opened once, took a beating, and tried again.

The other two will open once air traffic to the city increases.