情景对话，从下面方框中选出合适的选项补全对话
A: 1
B：Because I have got the first prize in the English Competition.
A: Congratulations. 2 And then we can have a party this Saturday.
B: 3 Where shall we have this party?
A: 4
B: When shall we start?
A: 5
B: Ok. See you then.
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解析：
【小题1】从后面的回答：Because I have got the first prize in the English Competition.可知问句是why提问。选D
【小题2】从后面的句子：And then we can have a party this Saturday.可知是为什么不告诉别人。选C
【小题3】从前面的And then we can have a party this Saturday.可知这是好主意。选A
【小题4】问题是：Where shall we have this party?可知是在教室。选E。
【小题5】从前面的问题：When shall we start?可知回答是时间。选B。