1. Has promoted is the correct answer
Answer:
Haven't I?
Explanation:
The statement has Have as auxillary verb and the statement is positive. So, while making the tag question negative form is used.
Answer:
Thus, while you feel miserable when you have an influenza infection, you can rest assured that it is because your body is fighting hard. It's combating the spread of the virus in your lungs and killing infected cells.