A. There are several options for closing the gaps in your mouth. You can try having a denture, but i would suggest that for the best aesthetic and long term result, to have dental implants placed with bridgework ontop. This all depends on if you have sufficient bone levels to place the implants. I would advise that you see a cosmetic dentist to see what your options are. It is difficult for me to comment as I haven’t seen the current state of you mouth and smile.
Crowns and veneers are always a good way of improving the overall aesthetics, but this all depends on how much you had budgeted for your overall smile.