Everything happened so quickly, and I never thought to ask.

Two things happened very quickly then, almost in the same moment.

Whatever happened would happen quickly now, while everyone's blood was hot.

Sometimes things happen quickly, out of the blue, and by chance.

It happened so quickly I cannot be sure of anything.

It happened so quickly I didn't have time to move.

I could not understand how it had all happened so quickly.

He'd be a long way from the capital, where things might happen very quickly.

So it had to happen quickly, or not at all.

The parents called our office, and a series of very good events happened quickly.