Can I go to work if my roommate is positive?

I can't. People who are positive should live separately, and people who live together should live in different rooms to avoid contact with positive people. Other family members should be well monitored for 5 days. If the nucleic acid result is negative during this period, you can work or go to school normally under the premise of personal protection (wearing N95/KN95 mask), but you should avoid participating in gathering activities or going to public places and closed places.