I . Give the correct form of the works given to complete the sentences :
1. The air in the city is very ..........................(pollute)
2. We'll make this beach clean and .....................again . (beauty)
3. If the pollution ....................., what will happen ? (continue)
4. The world's population is growing .....................(quick)
5. If doesn't rain soon , there'll be a great ..............................of water . ( short)