7. Although we had planned to walk right round the lake, the heavy rain made this impossible.
8. I have been too busy to answer your email. Nevertheless, I'll do it soon.
9. Despite being sick, Mary didn't leave the meeting until it ended.
10. In spite of living in the same street, we rarely see each other.
IV.
1. D All are correct
2. A Despite the darkness, they continued to work
3. C Although it was noisy, I kept on studying
4. B Although his English was good, he wasn't chosen