补全对话。根据对话语境，填入所缺的短语或者句子使对话意思完整。(5分)
A: Good morning, Sam!
B: _________________小题1:Alice! Where are you going?
A: I want to go to the food store and buy a birthday cake for my brother.
B: ________________小题2:
A: His birthday is on January 27th.
B: _________________小题3:
A: He was born in 1997.
B: Um, it's 2012, so he is fifteen years old now. Do you want to have a birthday party for him?
A: ________________小题4:
B: Can I go to your brother’s birthday party?
A: ________________小题5:You are also his good friends. Welcome to the Party.
小题1:G
小题2:E
小题3:C
小题4:D
小题5:B
题目分析：A和B早上见面互相问好，B问A 要去干什么？A说要给他的弟弟买一个生日蛋糕。B又问A他弟弟的生日是什么时候，他是在哪一年出生的。A都一一作了回答。A想去参加B的弟弟的生日聚会，B表示欢迎。
小题1:根据A说Good morning, Sam! 可知B回答Good morning。故选G。
小题2:根据A说His birthday is on January 27th.可知B在问When is your brother's birthday?故选E。
小题3:根据A说He was born in 1997.可知B在问Which year was he born in？故选C。
小题4:对B说的Do you want to have a birthday party for him?进行肯定回答应是Yes, I do.或Sure.故选D。
小题5:根据A说Can I go to your brother’s birthday party?可知 B的回答为Yes, you can。故选B。