I. Choose the word (A, B, C or D) that fits each blank in the following passage.
Everyone wants to reduce (1)
But the pollution problem is as complicated as it is
serious. It is complicated because much pollution is caused by things that benefit people. For
example, exhaust from automobiles causes large percentage (2)
automobile provides transportation to millions of people. Factories discharge much of the material
that pollutes air and water, but factories give employment to a large number of people. Thus, to end
or greatly reduce pollution immediately people would have to stop using many things that benefit
them. Most people do not want to do that, of course. But pollution can be gradually reduced in
several ways. (3).
such things as automobiles and factories cause. Governments can pass and enforce laws that
(4)
air pollution. But the
and engineers can work to find ways to lessen the amount of pollution that
businesses and individuals to stop, or cut down on certain polluting activities.
B. pollution
B. with
B. Engineers
B. Requires
C. polluted
C. in
C. Workers
C. required
D. polluting
D. of
D. Scientists
1. A. pollute
2. A. to
3. A. Doctors
4. A. require
D. requiring