* Because or Because of
1. It was difficult to deliver the letter......because of......the wrong address
2. We have to cut down on our driving.....because.....there is an oil shortage
3. Rescute attempts were temporarily stopped....because of.....the bad weather
4. They visited their fiends often..because....they enjoyed their company
5. Paul could not go to the football game...because of.....his illness
6. Marcella was awarded a scholarship....because of...her supervisor ability
7. Nobody ventured outdoors...because of......the hurricane warnings
8. We plan to spend our vacation in the mountains...because...the air is purer there
9. We have to drive around the bay..because.....the bridge was destroyed in the storm
10. The chickens have died...because of..the intense heat.