If they what I was saying, they'd know what I was talking about
--- The young man spent as much time as he _______ the experiments. --- No wonder he succeeded _______.
--- Would you like to join us? --- Sorry, I’m not _______ as any one of you.
--- _______ he come in or wait outside? --- Let him in, please.
--- Have you got ready for the meeting? --- Not yet. We need ________.
He took off his coat, _____ all his pockets, but couldn’t find his key.