Điền từ thích hợp vào chỗ trống

we are(1)______ the earth . The seas . the seas and rivers are tô dirty to swim in. Therere is too (2)_____smoke in the air in many cities in the world . Ưe are also destroying lots of plants and(3)____.Many areas of the earth are wasteland . farmers(4)______ many parts of the world can (5)_____grow enough food to eat . in some countries therererre is too little rice . The earth ís in danger. save earth