-7,0,1,2,()
A.3
B.6
C.9
D.10
6,7,3,0,3,3,6,9,5,() A.4;B.3;C.2;D.1;
:1,2,2,3,4,6,()。A.7 B.8 C.9 D.10
:6,7,3,0,3,3,6,9,5,()A.4 B.3 C.2 D.1
1,2,2,3,4,6,() A.7 B.8 C.9 D.10
1,2,2,3,4,6,()。A.7 B.8 C.9 D.10