4. Because the weather is cold, the crops are late this year.
5. Because of Tom's lateness, Mary was worried.
6. Because of Tom 's bad leg, he walked slowly.
7. Because of wanting the English course, I came here.
8. Despite the hot weather, I went to school.
9. Because there is the dust in the room, I can't go in.
10. Because there is too much smoke, we have to wear masks.