Madame Curie(居里夫人) contributed all his life ______ radium(镭) so that she has earned respect from people all over the world.
— What is that building ______ construction ? — It looks like a hospital..
Honestly speaking, I would agree with Shirley, though not ______.
Every possible means ______ to prevent the air pollution, but the sky is still not clear.
My father and my mother have been married for 30 years, and never once ______ with each other.
Although the old man was ______ death, he still fought with the disease bravely.