读对话,判断下面的句子的正误David: Hello, Martin, where are you going now?
Martin: I am going to the supermarket.
David: What are you going to buy?
Martin: I am going to buy a big cake, because today is my grandpa's birthday.
David: Oh, happy birthday to your grandpa.
Martin: Thank you. What are you going to do this evening?
David: I am going to do some word puzzles and watch TV.
Martin: What about joining us?
David: OK. Thank you for talking to me.
Martin: See you this evening!
David: See you!