Choose the missing terms out of the given alternatives : A, CD, GHI, ? , UVWXY

The correct answer is $\boxed{\text{LMOP}}$.

The sequence is a simple alternating repetition of the letters A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y.

The first two letters are A and C. The next two letters are G and I. The next two letters are M and P. Therefore, the next two letters are L and M.