Language points:

words: lesson   another  concert

phrases: study for a test    go to the doctor    have a piano lesson     help my parents     visit my aunt  go to the concert    too much homework

sentences:  --Can you come to my party on Wednesday?—Sure, I’d love to.

          --Sorry, I can’t. I have to have a piano lesson.

          --I’m sorry, too. I have to go the doctor.