One Thing Remains

The Doctor: Amy -o-d, there’s someth--- you’d better u-dersta-d about me ‘cause -t’s -m-orta-t, a-d o-e day your ---e ca- de-e-d o- -t: - am de----te-y a mad ma- --th a box!

A, B, C, D, E, H, M, O, R, S, T, U, X, Y