He asa national hero for winning the first gold medal for his country in theOlympics

It ____ me two hours to finish the work last night.

Tom was about to close the window______________ his attention was caught by abird.[ ]

Not until the stadium of Bird’s nest was completed in the end ____back to their normal position.

Is this the girl _____ whom I can turn for help? Is she good at this subject? [ ]