________, the Mauritius parakeet, and the Japanese crested ibis are among (the most endangered of the world's birds.

The boy was ashamed ________ he had broken the window.

She said she didn't like ________.

Into the Bermuda Triangle ________, never to be seen again.

Nobody really knew the ________ solution to the problem.

After the funeral, the residents of the apartment building ________.

The student like that professor's course because ________.

To answer accurately is more important than ________.

An advisor to both Franklin Delano Roosevelt and Harry Truman, ________ of Bethune-Cookman College.

By observing REM, or rapid eye movements, ________ to know when dreaming occurs during sleep.