补全对话，每空一词。

A: Hi, Mary! __1__ are you going to __2__ tomorrow morning?

B: Nothing much.

A: __3__ about doing __4__ sightseeing on the Great Wall?

B: That's a great idea! __5__ and where are we going to  meet?

A: Outside of our school at half __6__ six.

B:  __7__ are we going there?

A: Let's __8__ a bus.

B: OK. What should we take?

A: Let's take some food. We are going to have a __9__ on the Great Wall.

B: That's a good __10__!See you then!

A: See you!