person A: I was so glad that my friend told me something right as I was walking into school.
person B: Why_comma_ what did he tell you?
person A: She told me that we were gonna have a pop quiz in physics that day and we did so I was more prepared for it because of what she said.
person B: She must really be a good friend_comma_ how are you repaying here?
person A: I just helped her with some homework.