2) Although Henry is a millionaire, he hates spending money.

→ In spite of being a millionaire, Henry hates spending money.

3) Mark went on working although he felt unwell.

→ Despite feeling unwell, Mark went on working.

4) They slept soundly although the night air was hot.

→ Hot as the night air was, they slept soundly.

5) Although she was successful, she felt dissatisfied.

→ In spit of being successful, she felt dissatisfied.

6) Although the boat was full of water, it sailed on.

→ Despite being was full of water, the boat sailed on.

7) Although the children were poor, they seemed happy.

→ Despite being poor, the children seemed happy.

8) We couldn't get tickets although we queued for an hour.

→ In spte of queueing for an hour, we couldn't get tickets.

9) I enjoyed the film although the story was silly.

→ Silly as the story was, I enjoyed it.

10) He didn't arrive until 9 o'clock although we promised that he wouldn't be late.

→ Despite the fact that we promised that he wouldn't be late, he didn't arrive until 9 o'clock.