根据下面所提供的对话情景，在每个空白处填入一个适当的句子，使其意思连贯、完整。
Jim and Bob are good friends.They are going home after school.
J: Jim B: Bob
J: Hi, Bob. Let's go home.
B: OK.
J: Summer holiday is coming.1________.
B: I'm going to Beijing with my parents.
J: Why! You went there with your father last winter holiday.
B: 2________.
J: Really? How exciting! I wish I could go to see the Olympic Games, too.
B: Yeah. I feel I'm very lucky.
J: By the way, 3________.
B: By train.
J: 4________.
B: About two weeks.
J: 5________.
B: Thank you.
