Can you solve this sequence?
SS, EH, QH, SU, PY, US, SU, ?
Hint:
The title is definitely a hint.
The answer is EO, for Dragon. These are the first and last letters of the Chinese Horoscope animals by time, shifted by one.
Which one set of letters when placed sequentially in the blanks will complete the following series correctly? a _ c a _ b _ a _ _ b c _ a b _ c c _ a a b _ c _
