Question

II. Supply the correct form of the words in bracket.

   1. Unfortunately. Biogas isn’t totally ___________ to people.                                          (harm)

   2. Nuclear power is ____________, but it is very dangerous.                                            (plenty)

   3. Disposable batteries are _____________ the environment.                                            (pollute)

   4. Scientists are finding an _____________ source to replace gasoline.                            (limit)

   5. Will ______________ energy sources be banned from using in the future?                  (new)

   6. We should think ____________ how to protect our environment.                                 (positive)

   7. _____________ gas is going to run out someday.                                                          (nature)  

   8. It is predicted that there will be a serious _____________ of energy in the future.       (short)

   9. Renewable energy is an __________ source of energy. It is unlimited.                         (exhaust)

   10. One of the ______________ of wind power is that it is unavailable.                           (advantage)

Answer 1

1unharmful

2plenty

3polluting

4limitation

5unrenewable

6positively

7natural

8shorten

9exhaustion

10disadvantage