Choose the word or phrase that best completes the sentence or substitutes for the underlined word or phrase.
The Massachusetts State House, ______ in 1798, was the most distinguished building in theUnited States at that time.
A.completing
B.which was completed
C.was completed
D.to be completed

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______ in large quantities in the Middle East, oil became known as black gold because of the large profit it brought.
A.Discovering
B.Which was discovered
C.Discovered
D.That when discovered

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Jerome Kern's most famous work is Showboat, ______ , most enduring musical comedies.
A.it is one of the finest
B.of the finest one
C.the finest one
D.one of the finest

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Many newer cars have a much lower fuel ______.
A.consuming
B.consumer
C.consummation
D.consumption

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All fossil fuels are ______ resources that cannot be replaced after use.
A.unlimited
B.renewable
C.available
D.non-renewable

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Pioneers, ______ in isolated areas of theUnited States, were almost totally self-sufficient.
A.who living
B.living
C.lived
D.that lived

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The government has spent £1 million on an advertising ______ to encourage energy conservation.
A.campaign
B.promotion
C.operation
D.enterprise

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A nuclear reactor releases ______ which is dangerous to the environment.
A.radiation
B.heat
C.energy
D.carbon dioxide

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Solar energy can be changed ______ electricity.
A.in
B.to
C.into
D.for

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The amount of solar energy that reaches the earth depends ______ the atmosphere.
A.to
B.in
C.on
D.with