lunes, 26 de enero de 2009

Plurals (4)

1. Change the plural sentences to singular..
Make sure that the verbs agree with their subjects.

e.g. Engineers must be familiar with computers. (plural)
An engineer must be familiar with computers. (singular)

1. Trees produce oxygen.

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2. Automobiles should be kept in good repair.

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3. Bats locate insects by means of sonar.

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4. Diplomats should, if possible, be multilingual.

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5. Hats are useful in cold weather.

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6. Physicists must study a great deal.

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7. Elephants can be dangerous.

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Change the singular nouns to plural.
Make sure that the verbs agree with their subjects.

e.g. A bicycle is a convenient means of transportation.
Bicycles are a convenient means of transportation.

1. A secretary should be proficient in spelling and grammar.

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2. A sportsman needs to remain calm under pressure.

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3. An eagle has good eyesight.

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4. A conference requires careful planning.

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5. A rock is composed of minerals.

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6. A potato is rich in starch.

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7. An omelette is made of eggs and other ingredients.

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