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עמוד:29
Booklet Page 16 : More Practice 1 . Complete the sentences below with the correct form of the verb . Use the verbs in the box . a . If it doesn ' t rain soon , the water level of the lake dangerously low . b . Unless we do something about pollution from cars and factories , the air quality c . Public areas will have less litter if we laws that require recycling of plastic , d . If endangered animals are not , they will soon become extinct . e . If we more trees , more oxygen into the atmosphere . f . Unless you waste disposal methods , factories underground water supplies . 2 . Complete the "Better Environment Tips" using the correct form of the verb in the First Conditional form . Use the verbs in the box . Better Environment Tips a . Do you have things around your home that you don ' t use anymore ? If you _ them to charity , someone else will find them useful . b . If you your car using a bucket of water instead of a hose , you will use less water . c . If you use rechargeable batteries , you the amount of toxic waste . d . If you glass bottles , they can be recycled and used again . e . If you the dishwasher when it is full of dishes , you _ less water than washing the dishes by hand . f . If you burn dead leaves and grass , it the air . So them in your garden as a natural fertilizer to enrich the soil . become contaminate deteriorate improve pass plant protect release donate pollute put reduce return run use wash
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