The hostess of the party, who ______ as a doctor for five years, is president of a famous private school.
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.