But I will try.

But if I thought that they guessed--" There was a rap on the door and Bunning gasped, stepped back against the wall, his face white, his knees trembling.
"Don't be such a fool," Olva said fiercely.

"If you're like that every time any one knocks you may as well chuck it at once.

Look sensible, man.

Pull yourself together." Lawrence entered, bringing log with him from the stairs.