The context of the following conversation is Alex listened to a lecture before a big test. Alex paid attention to the details and got an A.:
Alex says I just got my score. I got an A!.
The friend responds That's great! I'm so happy for you..
Alex responds I'm relived, I was very anxious about that test..
The friend responds How'd you do it?.
Alex responds Honestly, I just paid attention to the lectures in class, It made a big difference..
The friend responds That's great. I'm going to start taking better notes..