Exercise 6: Rewrite these sentences:
1. He left shool because his life was hard.
 -> Because of ..................................................................
2. John succeeded in his exam because of his hard and methodical work.
 -> Because ......................................................................
3. We đin't want to go out because of the heavy rain.
 -> Because .........................................................................
4. Because he had NO experience in machinery , he đin't succeed in repairing this machine.
 -> Because of ......................................................................
5. Because of the darkness, they stopped working .
 -> Because .....................................................................................
6. We postponed our trip because the driving conditions were bad .
 -> Because of ............................................................................
7. The water in most rivers is unsafe to drink because it is polluted.
 -> Because of ...................................................................................
8. We all have received the best of everything because of our generous parents.
 -> Because ........................................................................................