During adolescence--- time of life between child and adult, teenagers want to be part of the group.
A. a, /
B. the, the
C. the, /
D. a, the
网友回答
A. a, /
B. the, the
(答案→)C. the, /
D. a, the
解析：表示特指between child and adult的这段时间，故前面用定冠词the；故排除AD。part of意为其中“……的一部分”，不用加the,故选C。