Increased consumption will lead to faster _______ of our natural resources.
A.exhaustion
B.exhaust
C.exhaustively
D.exhaustive

We should develop such _______ sources of energy as solar energy and nuclear energy.
A.surprising
B.revolutionary
C.alternative
D.tradition

The fence _______ our house is made of wood.
A.surrounding
B.surrounds
C.surround
D.to be surrounded

There is now increasing concern about the world's energy ______ particularly about those involving fossil fuels.
A.goods
B.resources
C.possessions
D.materials

There are six letters _______today.
A.to write
B.to be written
C.writing
D.written

Choose the best answer to complete the following sentences._______ in large quantities in the Middle East, oil became known as black gold because of the large profit it brought.
A.Which was discovered
B.Discovered
C.That when discovered
D.Discovering

George is the man _______ to represent the committee at the convention.
A.was chosen
B.chosen
C.choosing
D.who chosen

Coal, gas and oil are ______ forms of energy that can not be replaced after used.
A.unlimited
B.operation
C.non-renewable
D.renewable

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

The first man _______ was entirely unsuitable.
A.to be interviewed
B.interviewed
C.interviewing
D.to interview