2. Complete the dialogue using 'in', 'on', or 'at'. John: Do you have any plans for the weekend? Paul: What are you suggesting? John: Let's have lunch 1) Saturday. I'm free 2) one o'clock. Paul: Saturday? Oh, it's my sister's birthday. We always have lunch together 3) my sister's birthday. John: Oh! How about 4) : Sunday? Paul: Sunday is fine. I'm free 5) the afternoon but I have tennis lessons 6) the morning. John: Really? I have tennis lessons 7) Sunday morning, too. Where do you go? Paul: It's a tennis court 8) Market street. Where do you go? school. We practise 10) John: My tennis lessons are 9) tennis court of the school. lunchtime 12) Sunday. Paul: Good! Let's meet 11) the John: OK! See you soon.​