在横线上填写适当的句子，补全对话。 A: Hi. Linda! Our summer vacation (暑假) is next week. 　 　B: I want to have a trip.A: 　 　B: I want to go to Beijing.A: 　 　B: Because I think Beijing is a city with many historic landmarks (拥有许多历史性地标的城市).A: 　 　B: I want to go there with my cousin.A: Oh. 　 　B: His name is Peter Miller and he's in Class 5. Do you know him?A: Yes, we're in the same club. Oh, it's time to have class. Have a good day. Linda.B: Thanks. You, too.