In order to _________ a good learning atmosphere, our teacher made strict rules for us at the beginning of this term.
He went to Shanghai ___________ September , and came back ______ the morning _________ October 4.
She _________ for 15 years ,yet she didn’t know what kind of man she _______ .
–Have you taken your medicine today ? --Yes , I ______ it after breakfast.
_________ the fans are waiting for the popular singer outside the concert hall.
They considered ______ a computer ,which was considered ______ a great help in their work.