The key answer of exercise 5

a)

1. ✗
2. ✓
3. ✗
4. ✓
5. ✓
6. ✗

b)

1. Although most internet writers are amateurs, many give objective information.
2. While the internet is a convenient source of information, its accessibility can also mean that this information is not trustworthy.
3. Of course there's some inaccurate content. However, it's the reader's responsibility to identify the reliable information.
4. Despite the fact that wiki contributors try to give accurate information, too many don't use reliable sources. OR Despite wiki contributors trying to give.
5. Although many amateur news websites look serious, that doesn't make them accurate.
6. While these weaknesses exist, there are reasons to trust much internet content as well.