. Some animals are in danger, and the scientists are doing ___ they can ___ them.

If you need help , for example , money or _________ , let me know , will you ?

Science is more than a collection of unrelated facts; to be meaningful and valuable, ______ must be arranged to show generalized character.

A child who lives in an uninteresting environment will develop less intelligence than ______ who lives in a rich and changing environment.

My mother often cooks _______ for us.