Question

find missing tern Z,S,W,O,T,K,Q,G,?,?

Answer 1

There is a pattern in the terms given that is
Z - ( six letters ) = S
S + ( 3 letters) = W
W - (six letters)=O

Similarly
G + ( 3 letters) = J
J - (six letters) = D

.
So the last two missing terms are
J and D

Answer 2

Answer is N,C

$\bold{How?}$

The given sequence a combination of two series:
I)Z, W, T, Q, ?      and      II)S, O, K, G, ?


The pattern I is 
Z - 3 = W
W - 3 = T
T - 3 = Q
Q - 3 = N


The pattern in II is
S - 4 = O
O - 4 = K
K - 4 = G
G - 4 = C