Genetic engineering is helping researchers unravel the mysteries of previously incurable diseases so that they can get to its root causes and find cures.

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He put a_________ against the tree and climbed up to pick the apples.

Any group that conducting its meeting using parliamentary rules will encounter situations where prescribed procedures cannot be applied.

If you “make” a “five-days” trip across the Atlantic Ocean, your ship “enters” a different time “zone” everyday

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The safety committee's report recommended that all medicines should be kept out of the_________ of children.

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Tom was not there; __________, his brother was.

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Mary said she _________ there the day before.

While studying the chemistry of human body, Dr. Rosalyn Yalow won a Nobel Prize for the research she conducted on the role of hormones.

The most visible remind of the dose relationship between the United States and France is the famous Statue of Liberty, which stands in New York Harbor.

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

Deciduous trees are ones that lose its leaves in the autumn and grow new ones in the spring.

Some of the stiffest competitions the jackals face on the plains of Africa comes from vultures

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She ranked to make an early_________ at the hairdresser.

 If they go to the disco, they ________ to loud music.

Choose the best answer from the four options given (marked A, B, C, or D) to complete each sentence. 

Ba wishes he _________ have a new bicycle.

California has more land under irrigation than any another state.

After Allan had searched for twenty minutes, he realized that his jacket had been laying on the table the entire time.

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The explorers walked all the way along the river from its mouth to its_________.

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By the time he retires, he__________ $20,000.

When contented and occasionally when hunger, cats frequently make a purring sound.

Consequently the kit fox is an endangered species, wildlife experts in the California desert are using carious methods to protect it.