III,
16,How much fruit does that farmer produce every years?
17,are wasting
18,Will he buy
19,flows
20,don't grow
IV,
We are destroying the Earth. The seas and rivers are (21) too dirty to swim in. There is too (22) much smoke in the air in many cities in the world. We are cutting (23) down too many trees. We (24) are burning he forests. We are also destroying (25) both of plants and (26) animals. Many areas (27) of Earth are wasteland. Farmers in many parts of the world cannot (28) get enough to eat. In some countries (29) there is too little rice. The Earth is in (30) danger. Save the Earth !