C. Rewrite the following sentences.
1) As he was not there, I left a message.
2) Due to the fact that we were planned badly, the trip was terrible.
3) As I had spent all of my money, I couldn't go to a concert.
4) Since M is away this weekend, we will postpone the meeting.
5) I must do the job myself because you don't help me.
6) Since his doctor told him to, Joe started jogging.
7) As it's raining again, we have to cancel the concert.
D. Choose the best option.
1) due to
2) because of
3) since
4) since
5) due to
6) since
7) as
8.because of
9.because
