China’s hurdler Liu Xiang was disqualified due to false start in the 60-metre event, _____ his rival Dayron Robles of Cuba an easy win of 7.66 seconds.
Scientists across the world agree that this is an invention of ____ great significance, ____ invention that will greatly change human life.
---Excuse me, Dad, but I am going to the club to meet my friends in the football team. ---OK.
It is well known to us all that a lot of rivers _______by factories.
I feel ____to have been invited to give a speech here.
It was along the Mississippi Rever ____Mark Twain spent much of his childhood.