Linking words of cause and effect

1. I missed my flight __________ a traffic hold-up.
   1.   ?    OWING TO
   2.   ?    SINCE
2. I’m forever losing things __________ I’m quite forgetful.
   1.   ?    SINCE
   2.   ?    BECAUSE OF
3. The bus was delayed __________ heavy snow.
   1.   ?    DUE TO
   2.   ?    SEEING AS
4. __________ it was getting late, I decided to book into a hotel.
   1.   ?    AS
   2.   ?    OWING TO
5. You can go first __________ you’re the oldest.
   1.   ?    AS
   2.   ?    BECAUSE OF
6. He hated being in the army __________ he had to obey commands.
   1.   ?    BECAUSE
   2.   ?    BECAUSE OF
7. Our departure was delayed __________ bad weather.
   1.   ?    BECAUSE OF
   2.   ?    BECAUSE
8. __________ the book sold many copies, it was reprinted twice.
   1.   ?    SINCE
   2.   ?    DUE TO
9. We cancelled the picnic __________ it was raining.
   1.   ?    SINCE
   2.   ?    OWING TO
10. We didn’t go out __________ the rain.
    1.   ?    BECAUSE OF
    2.   ?    BECAUSE
11. Her success is __________ her determination.
    1.   ?    DUE TO
    2.   ?    OWING TO
12. I wanted to leave early __________ I was non enjoying the party.
    1.   ?    AS
    2.   ?    AS A RESULT OF
13. Profits are declined __________ the recent drop in sales.
    1.   ?    AS A RESULT OF
    2.   ?    BECAUSE
14. __________ this man is a doctor, I would assume he has a modicum of intelligence.
    1.   ?    SEEING AS
    2.   ?    BECAUSE OF
15. We may as well go to the concert __________ we’ve already paid for the tickets.
    1.   ?    SEEING AS
    2.   ?    OWING TO