Water can absorb and give off a lot of heat without big changes in temperature,thus creating a___environment.

Jane was so ______ for the news of her lost child that she was almost driven ______.

The elderly need special care in winter, as they are        to the sudden changes of weather.

Many scholars share the belief that interest is as _____ to learning as the ability to understand, even more so to some degree.

He is a           boy.