B1:
1. If you tell him a lie, (he/ get/ terrible/ angry ) he will get terribly angry. 
2. If people don't throw litter on streets. (streets / keep / clean) the streets will keep clean. 
3. Our family feel happy that (grandfather / recover / disease / quick) our grandfather recovered the disease quickly. 
4. If the waste is not poured into the water. (water/ not/ polluted) the water won't be polluted. 
5. Tom was sad as ( he/ punish/ his parents) he was punished by his parents.