[speaker001:] Could you come and help me mend the computer, Neel?
[speaker002:] What's wrong with it?
[speaker001:] I can't log on the internet again.
[speaker002:] Let me see. Did you change anything on your computer?
[speaker001:] No, never.
[speaker002:] What kind of anti-virus software do you use?
[speaker001:] I don't have this kind of software.
[speaker002:] Are you riding? You have to install an anti-virus software on your computer. If not, you will be attacked by viruses, and it can lead your computer into failure.