6. I was hungry, ___ I ate a sandwich.

A. so
7. ___ he was tired, he kept working.

B. Although
8. She studied hard, ___ she failed the test.

C. but
9. He always checks his email ___ starting work.

B. before
10. ___ it was cold, we went swimming.

B. Although
11. ___ she didn't study, she failed the exam.

A. Because
12. She failed the test; ___ she studied very hard.

C. although
13. ___ the noise, I couldn't concentrate.

D. Because
14. I will wait here ___ you come back.

A. until
15. We arrived late, ___ we missed the meeting.

A. so
16. ___ he was tired, he didn't stop working.

A. Although
17. They didn't go out ___ the weather was bad.

B. because
18. ___ her efforts, she didn't succeed.

B. In spite of
19. ___ he was late, he missed the meeting.

C. Even though
20. She trained very hard; ___ she didn't win the race.

C. however
 

1. B. Although
2. B. because
3. C. but
4. A. So
5. C. Although
6. A. because
7. B. however
8. C. so
9. B. before
10. C. while
11. B. Although
12. C. But
13.B. although
14. B. Despite
15. A. until
16. A. so
17. B. because
18. B. because
19. C. Despite of
20. B. But