1. You introduce me to him because we have already met. A. doesn’t have to B. isn’t have to C. don’t have to D. wasn’t have to

answer is no C i.e don't have to

you don't have to introduce me to him because we have already met.

the reason some people sacrifice their own life for another person's life could be that they are in love with them and would do anything to keep them safe a protected even if that means risking their life in the process

for this, you need to remember something significant in your own life, for example, if you were bullied when you were younger, you can mention your memories on this and touch on how such treatment can harm other kids your age either physically or mentally. (racism, car crashes, a parent in the hospital are all very good subjects, think hard on it! )

hope i ! : )