Only _____ people can have a good understanding of the lecture given by the scientist.

—John always thinks of others instead of himself.—So she does. It is __________ of him to offer help to others.

In the plane crash accident, the chance of the pilots’ survival is ______. 

The professor could tell by the _______look in Maris’s eyes that she didn’t understand a single word of his lecture

At times, worrying is a normal, ________ response to a difficult event or situation – a loved one being injured in an accident, for example.