补全对话，根据对话情景，在空白处填适当的句子。
A: Hi , Li Meng !                          .
B: Nice to see you,too.
A:                               ?
B: Oh ,I’m going to the train station . I want to go to Beijing .
A:                             ? 
B: Yes ,I do . I often go to Beijing by train.
A: What do you want to do in Beijing ?
B: I want to meet my good friends .
A:                          ?
B:I go to Beijing once a year.
A: Beijing is very beautiful now . Have a good time !
B:              .