wordform 9 hk2

1. We must learn about keeping the environment                                                     . (pollute)

It is-      that our environment is more and more polluted. (disappoint)

The drivers have left lots of garbage on the ground after their         _____________. (refresh)

There are some volunteer                                                     to help clear up the beach. (conserve)

They don’t want to make the situation                                                    . (seriousness)

For your comfort and  , we recommend you keep your seat belt loosely fastened during the flight. (safe)

Jogging is a very         form of exercise. (energy)

Scientists are looking for an                                              way reduce energy consumption. (effect)

I think the careless drivers should be fined   __________________   . (heavy)

            is better than cure. (prevent)