Can you please just check this it is not very hard i think so help please

It's my exam tomorrow but I'm not nervous. I worked hard, so I'm very confident I'll do well. Could you explain that to me again? I'm a bit comfused. Thank you very much. I'm very grateful for your help. Carla's very upset because her cat died. I'm so glad you're back! I missed you. I'm disappointed that I didn't get the job.
Answer:
2)nervous /confident
3)confused
4)grateful
5)upset
6)glad
7)disappointed