Nuclear science should be developed to benefit the people ______ harm them.
_______ to sunlight for too much time will do harm to your skin.
Although it has been buried underground for over 1,000 years, the ancient queen's body remains well ________.
Scientists are convinced _________ the positive effect of laughter ________ physical and mental health.
The old painter is perfectly __________ to live in a hut and paints pictures all day.
It was the boy, rather than his teacher, that ____ for what he had done.