1. Because World War 2 happened, women took over business for their absent husbands.
2. Because of his bad behavior, she was very angry.
3. Because he was worried, he couldn't sleep.
4. Because he drove too fast, he caused a serious accident.
5. Because the fog was thick, I lost my way.
6. Because he stayed up late last night, he was tired.
7. Because of the great distance, we couldn't read the sign on the building.
8. Because of her impatience, she'll never get success.
9. Because of being often late for work, he'll be sacked.
10. Because it is harm for health, governments advise giving up smoking.
11. Because of small rooms, they haven’t bought the house.
12. Because of incomplete answers, he got bad marks.
13. Because she lost all her money, Maria couldn't return home.
14. Because my friend is absent, I have to copy the lesson for him.
15. Because of English's importance, a lot of people learn it.
16. Because of Tom's laziness, he is often punished.
17. Because of the heavy rain, I was late.
18. Because her mother is sick, she has to stay at home.