Do not attempt to open the second door until my assistant has shut the first one behind you.

Ned went to the door and attempted to open it.

If not, she would attempt to open the door herself.

I am not even certain where he will attempt to open his gate.

The front door was locked and if she attempted to open it, he would hear her.

However, under no circumstances attempt to open the box yourself.

"They were attempting to open a slot and bring someone else in."

He walked to the door and attempted to open it.

"I think we should attempt to open this without firing," Seven said.

As for the rooms with closed doors, we did not attempt to open them.