The Shanghai World Expo is intended to achieve our common goal, world that is safer, cleaner and healthier than one we’re living in.
He has been fired and will have to________over charge of his office tomorrow.
In his speech the headmaster________to the great help the school received from the district government.
John was so________that he could hardly keep his eyes________.
He kept the light in his room________the whole night.
________you put your heart into your study, you'll feel________in it.