The ambulance was just arriving, for a worker, who ______ the window on the second floor, fell off the window.
This book tells ____ life story of John Smith, who left ____ school and worked for a newspaper at the age of 16.
John opened the door. There _____ he had never seen before.
_______ of danger in the street at night, she had to go home, with a friend ______ her.
At the meeting they discussed three different _______ to the study of radioactive waste.
You shouldn’t have quarreled with the customs official. _______ helping the situation, you just made it worse.