What made the whole nation sad was that more than 100 miners were buried      in the underground coal mine.

Grandpa is old, but he is still very ____.

The police always take advantage of dogs’ ____ sense of smell to search for something.

There was a __________look on her face because a________ problem _________the little girl.

The situation forced my mother and I exchanged our roles as child and caretaker, making me grow up much faster than the _____ child.