In those days, our ________ concern was to provide people who were stopped by the snow storm with food and health care.

Professor White has written some short stories, but he is _____ known for his plays. 

The listeners were much        than hoped. There were so many tickets left.

—How did you save the drowning girl?—By using a _______.

—Minister, are you satified with the performance of the Chinese athletes in Beijing Olympics? ---Yes, it couldn't have been _____.