Choose the missing terms out of the given alternatives. A, B, B, D, C, F, D; H, E, ?, ?

The correct answer is: E, F

The pattern is A, B, B, D, C, F, D. This means that the first two terms are always the same, the third term is the same as the first, the fourth term is the next letter in the alphabet, the fifth term is the same as the third, and so on.

Starting with H, the first two terms are H and E. The third term is the same as the first, so the third term is E. The fourth term is the next letter in the alphabet, so the fourth term is F. The fifth term is the same as the third, so the fifth term is E.

Therefore, the missing terms are E and F.