Question

let's go Sarah.........? ( shan't we,shall we,will you)​

Answer 1

Answer:

shall we

Explanation:

hope it helps...

Answer 2

Answer:

Shall we?

Explanation:

Shan't we is old fashioned and doesnt make sense in this context.

Shall we is correct.

Will you would require a comma after Sarah for it to make sense.

Hope this helps! :)))