This opens the door, and the last thing we need is more out-of-state trash.

This opens the door on another chapter of history.

One door closes and another opens.

It is often the last key on the ring which opens the door

When you say no to the wrong people, it opens up the space for the right people to come in.

Even if I'm taking out the trash, I lock the door. So for me, it's great.