I'm afraid I've little time to spare these days. I've a pile of papers to_____before the meeting.
Having taken our seats, ______.
She is _______ you could ever meet.
The red light above the elevator______ that he was at the tenth floor then.
Nobody but doctors or nurses and those____ by Dr.Hu ____ to enter the patient’s room.
They _____ on the program for almost one week before I joined them, and now, we ____on it as no good results have come out so far.