Believe it or not, the Great Wall, which _______ by people, should be protected at once.
In January , 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.
The old farmer, _____ the badly injured and burnt soldier, came out of the burning farmhouse, calling continuously for help.
To answer correctly is more important than _____.
He looked around and caught a man _____ his hand into the pocket of a passenger.
And there, almost _____ in the big chair, sat her little brother, who never had to be told to keep quiet.