.Play, often seen as ______ activity for kids, is still important in ____development of teenagers.
A.the; the B.an; the C.an; 不填 D.the; 不填
.Play, often seen as ______ activity for kids, is still important in ____development of teenagers.
A.the; the B.an; the C.an; 不填 D.the; 不填
B