Ex 3: Read advice from a website about the environment . Choose the best word or phrase for each space 
How can we save the planet ?
This is a very difficult question. We certainly need national and local governments to spend money on big projects. But every one of us should help every day . Here are a few problems and some solutions .
Water pollution is a very big problem . If dirty water gets into rivers , it can cause problems for fish .If people eat the fish , they may catch (25)........................If you see dirty water going into a river , tell your local government . We should all help to (26)........................our freshwater.
We must try to (27).......................the amount of plastic which we use. Use the same bag again and again when you go shopping .
Trash looks horrible in parks and open spaces , but it is also dangerous . It can kill (28)......................if it contains things which poison animals , and animals can die if they eat plastic ,glass ,or metal . Take your trash home ! 
Also , try to make less food trash ! Did you know that 30% of tall food around the world goes into trash cans ?
Don't buy too much food and then (29)..........................a lot of it.
We can save the planet , day by day !
(25)      A. damages             B. diseases            C. harm             D. hurt 
(26)      A. protect                 B. provide               C . prevent         D. produce 
(27)      A. recycle                 B. reduce               C. reuse            D. repair
(28)      A. soil                       B. lands                  C. wildlife           D. forests 
(29)      A. use                       B. save                   C. keep              D. waste