Question

We..(not buy) tickets, so we ... (cannot) go to the concert.

Answer 1

We haven't bought tickets,so we can't go to the concert.

Answer 2

Not Buying Tickets and Not Being Able to Go to the Concert

If you did not buy tickets, it means that you have not purchased them. As a result, you will not have the necessary tickets to attend the concert. Therefore, you will not be able to go to the concert.

Source:

Please let me know if there's anything else I can help you with!