Complete the exercise on the image.

A: Shall we go out tonight? B: I can't. I have to go to my aunt's. I must say goodbye to my cousin. He's leaving tomorrow. A: Will you be late? B: I don't know. I would like to go out with you, though. Can I call you later and let you know? A: Yes, sure. I'll be in the office until 7 o'clock. I want to finish some letters.