There are three ________ assistants in that ________ shop. 

In a(n) _____ to help preserve history, the Greek government established a committee to undertake the professional restoration of the Acropolis.

She had a guilty________ about not telling the police what had actually happened.

The __________ of his books among parents and the recommendation of experts both at home and abroad have quickly made him a celebrity educator.

If we keep wasting so much energy, ________ are that our oil wells will dry up and the environment will be destroyed.