Choose the underlined part that needs correcting

2. You research on future communication is good, but I like hers a lot more. Correction: Your research on future communication is good, but I like hers a lot more. 3. I think that my knowledge of information technology is deeper than him. Correction: I think that my knowledge of information technology is deeper than his. 4. It's noisy because there is a group of a dozen people on the table next to ours. Correction: It's noisy because there is a group of a dozen people at the table next to ours. 5. I've seen Alexandre using that new tablet several times, but I don't think it's him. Correction: I've seen Alexandre using that new tablet several times, but I don't think it's his. 6. Is the issue your audience and you are discussing worth your time and theirs? Correction: Is the issue you and your audience are discussing worth your time and theirs? 7. In 2000, Adam posted the first vlog video on his blog for his friends to view. Correction: In 2000, Adam posted the first vlog video on his blog for his friends to view. 8. My sister has worked as a waitress for six months to save money for her medical study. Correction: My sister has worked as a waitress for six months to save money for her medical study. 9. Tablets are widely used as portable devices while laptops usually require their own bag. Correction: Tablets are widely used as portable devices while laptops usually require their own bag. 10. Social media platforms allow people to create a friend list of people who can see your updates. Correction: Social media platforms allow people to create a friend list of people who can see your updates.