It was not until the 18th century that man realized that the whole of the brain was involved in the working of the mind, ?
As the world’s population continues to grow, the ___of food becomes more and more of a concern.
I ______ myself more-----it was a perfect day.
Mary worked here as a ____ secretary and ended up getting a full-time job with the company.
——Hey, can I ask you a favor? ----Sure, _______
A model or an experiment in a science class can help us see things which wouldremain hidden.