Choose the one word or phrase that best completes the following sentence :

Great Expectations is a novel about a boy called Pip, ................. is profoundly affected by his encounter with Magwitch, an escaped convict.

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.......................... into the Earth, it is unlikely that it would destroy all human life.

Determine which boldfaced segment needs to be changed to make the sentence grammatically correct

Cochineal is a tropical insect whose excretions has been used as a source of red pigment for over 400 years.

Determine which boldfaced segment needs to be changed to make the sentence grammatically correct

Had he known that was about to happen, it seems unlikely that Chamberlain would have signed the Munich agreement in 1938.

Determine which boldfaced segment needs to be changed to make the sentence grammatically correct

In the late 1960s, the Arpanet became the technical core of what would have later become the Internet.

Determine which boldfaced segment needs to be changed to make the sentence grammatically correct

Cambridge is famous for many things, but it is best known for having one of the most prestigious educational establishment in the world.

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The Pacific Ocean covers about one third of the surface of the planet, ........................... larger than all of the Earth's land area combined.

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The natural beauty of a gemstone can be enhanced ............................................ it is cut.

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Buckingham House was built in 1703 for the Duke of Buckingham and ................................................. the London residence for the British monarch with the accession of Queen Victoria in 1837.

Determine which boldfaced segment needs to be changed to make the sentence grammatically correct

Bacteria can be dangerous, such as when they cause infection, or benefit, as in the processes of fermentation and decomposition.