在空白处填入适当的单词、短语或句子补全对话。
A: Bill, I’ve been asked to dinner tonight. What time should I arrive for that?
B: Did they tell you ________?
A: Yes, they said the dinner would begin at seven. 
B: Then__________before 7:00. But make sure you are not much earlier than the time. 
A: Why?
B: That’s just what it is here. Maybe they are still _______ the dinner. 
A: ________. 
B: For the first time, you can bring a small present. You don’t want to show to everyone ________rich you are, do you?
A: No, _______. Thank you for your help.
B: That’s all right. _______ at the party.