填空题 Teenagers always long for the time which they are able to be independent .
A. long for
B. which
C. are able to
D. independent
【正确答案】
【答案解析】B 应改为when。[解析] 用来引导表示时间的从句，所以要用when。本句的意思是：“青少年总是盼望他们能够独立的时候(快到来)。”