补全对话

阅读下面对话，从方框中选择适当的句子补全对话3 （其中有两项是多余的）

A：Dad, we were told to collect some information about Fuzhou Subway.  

B：Sure. It's reported that Subway Line I will have its test run at the end of this year.

A：Great!

B：It has a total length of 29.2 kilometers.

A：How many stations are there?

B： And it connects four main areas of the city from the north to the south.

A：Then how about the ticket price?

B：Well, it still remains unknown.

A：Hope not.