6. Despite the high heat, the room wasn't warm.
7. In spite of having met her twice before, i didn't recognize her.
8. Despite having known each other for a long time, we’re not very good friends.
9. In spite of being ill, Minh still came to the meeting.
10. Despite promising that he wouldn’t be late, he didn’t arrive until 9 o’clock.
11. Despite the low salary, he accepted the job.
12, Though they quarrel each other, they remain the best of friends.
13. Although the weather was bad, they went out for dinner.
14. Even though he is old, he still leads an active life.
15. Although Ba worked hard, he failed his exam.