Let the bird fly away.

The boy set a bird free.

The girl let the bird loose.

I was late for the meeting with the result that I missed the most important part.

I will not let her escape this time.

Strike while the iron is hot.

Unless you make a decision quickly, the opportunity will be lost.

The girl released the birds from the cage.

You mustn't miss such a good opportunity.

Let the bird fly away.