用词、短语或句子补全对话。

Mei:  Mom, my American friend, Mary, invited me to dinner this evening.

Mother:  Really?1.________?

Mei:  Seven.  I'm afraid I have to go now.

Mother:  2. ________.  It's only five thirty.  You still have one and a half hours

         left. Besides, her home 3. ________ from here.

Mei:  Maybe I should get there early, or she will be worried.

Mother:  You know, in the USA, people go to dinner neither too late nor too early.

              You should 4,________ there at about seven.

Mei:   I see.  What do you think I should bring with me?

Mother:   You don't need to take anything.  If you like, you can 5________.

    Mei:  Do you think only flowers are enough?

Mother:  Of course. That's pretty good.