TOEFL Mistake Correction Test

Each of the sentences contains a mistake. In the first box type the mistake, in the second the correct form.

1. The bridge at Niagara Falls spans the longer unguarded border in the history of the world, symbolizing the peace and goodwill that exists between Canada and the United States.

The mistake:   The correct form:

2. When one experiences a change in diet by, for example, moving to a new location, you may also experience temporary problems with the digestive tract.

The mistake:   The correct form:

3. In ancient times and throughout the Middle Ages, many people believed that the earth is motionless.

The mistake:   The correct form:

4. Anyone reproducing copyrighted works without permission of the holders of the copyright are breaking the law.

The mistake:   The correct form:

5. Supersonic transport such as the Concorde will probably be widely accepted so soon as problems of noise and atmospheric pollution are resolved.

The mistake:   The correct form:

6. It is generally believed that Thomas Jefferson was the one who had researched and wrote the Declaration of Independence during the months prior to its signing in July 1776.

The mistake:   The correct form:

7. Because not food is as nutritious for a baby as its mother's milk, many women are returning to the practice of breast feeding

The mistake:   The correct form:

8. In the sixteenth century, Francois Vieta, a French mathematician, used the vowels a,e,i,o,u, to represent a unknown number.

The mistake: The correct form:

9. Increasing involvement in agriculture by large corporations has resulted in what is known as agribusiness, that is, agriculture with business techniques, including heavy capitalization, specialization of production, and to control of all stages of the operation.

The mistake:   The correct form:

10. Civil engineers had better planning to use steel supports in concrete structures built on unstable geophysical sites.

The mistake: The correct form:

11. Aristotle systematically set out the various forms of the syllogism that has remained an important reference for logic.

The mistake:  The correct form:

12. If the oxygen supply in the atmosphere was not replaced by plants, it would soon be exhausted.

The mistake:   The correct form:

13. With his father's guidance, Mozart begun playing clavier at the age of three and composing at the age of five.

The mistake:   The correct form:

14. The practical and legal implications of euthanasia, the practice of causing the death of a person suffering from an incurable disease, are so controversial as it is illegal in most countries.

The mistake:   The correct form:

15. Programs such as Head Start were developed to prepare children from deprived situations to entering school without experiencing unusual difficulties.

The mistake:   The correct form:

16. Since lightning was probably significant in the formation of life, understanding it might help us to understanding life itself.

The mistake:   The correct form:

17. Starfishes and sea urchins, members of the echinoderms or spiny skinned animals, are particularly interested because of their unusual structures.

The mistake:   The correct form:

18. Almost poetry is more enjoyable when it is read aloud.

The mistake:   The correct form:

19. It is essential that cancer is diagnosed and treated as early as possible in order to assure a successful cure.

The mistake:   The correct form:

20. Vasco da Gama, accompanied by a large crew and a fleet of twenty ships, were trying to establish Portuguese domination in Africa and India during the sixteenth century.

The mistake:   The correct form:

21. Gold, silver, and copper coins are often alloyed with harder metals to make them enough hard to withstand wear.

The mistake:   The correct form:

22. A vine climbs from one tree to another, continuing to grow and support itself even when the original supporting tree is not longer alive.

The mistake:   The correct form:

23. After Dr. Werner Arber discovered restriction enzymes, Drs. Daniel Nathan, Hamilton Smith, and him were awarded the Nobel Prize for their research in that field.

The mistake:   The correct form:

24. Although the Indians and the Eskimo had lived for centuries in Canada and the United States, when the Europeans settlers came in the seventeenth century, the newcomers began a systematic effort to push them further into the wilderness and to take the land from theirs.

The mistake:   The correct form:

25. Sometime ants keep smaller insects that give off honeydew, milking them regularly and even building barns to shelter them.

The mistake:   The correct form:


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