In the sixteenth century, Francois Vieta, a French mathematician, used the vowels “a”, “b”, “c”, “d”, “e” to represent a unknown number.

Choose the best answer among A, B, C or D that best completes each sentence: I read an interesting …… of information in the newspaper.

The plans for the building complex were describing by the architect.

I remember Steven was here in _____ spring of 2001, perhaps in _____ April of that year. 

The second thing she did when she got to the motel was to put her rings and other values in the dangerous provided.

Where there is _____ will, there is _____ way.

In some species of fish, such the three-spined stickleback, the female, not the male, performs the task of taking for the young.

Choose the best answer among A, B, C or D that best completes each sentence: A …. is a person who likes reading very much.

The Library of Congress, located in the nation’s capital, houses history documents and photographs as well as most books published.

Choose the best answer:
All of us need the........... of fresh air.

Please _________ and see us when you have time. You are always welcome 

Choose the best answer among A, B, C or D that best completes each sentence:  He wants to know when the final decision….. The activities of the committee and their delays already …..about.

The ozone layer must be protected because it shields the Earth from excessive ultraviolet radiations.

The ancient Romans used vessels equipped with sails and banks of oars to transporting their armies.

My brother attends an university in the Midwest which specializes in science.

Some birds can travel at speeds approaching one hundred miles an hour, and a few land animals can so.

On a ...........  of 1 to 10, in these subtropical desert regions the risk of desertification is according to the study.

The issues learned during the early stages of the project causing the researchers to initiate additional research.

Dinosaurs are traditionally classified as cold-blooded reptiles, but recent evidence based on eating habits, posture, and skeletal structural suggests some may have been warm-blooded.

Jeanne said that she would __________ our place this afternoon if she had enough time before she had to go back to work. 

From the four words or phrases (A,B,C or D), choose the one that best completes the sentence.

I have absolutely no doubt …….. the innocence of the man.