Oh my god, you have let the cat out of the bag, now!

The very private little operation had been well and truly let out of the bag.

She decided it was better not to let the cat out of the bag yet.

But I didn't let the cat out of the bag.

If that didn't let the cat out of the bag, nothing would!

If so, it is probably safe to let him out of the sleeping bag.

Finally an English language paper let the cat out of the bag.

Now the cat had been let out of the bag.

He'd love it too much, and let the cat out of the bag.

It wasn't time yet to let that cat out of the bag.