A. have nothing to do
B. have plenty to do
C. know exactly what to do
D. lose his focus when he talks
外公似乎從來不閑著,總是有很多事情做。
juvenile delinquent
少年犯
字典定義:具有破壞行為,或反社會行為,或父母無法控制其行為,從而可以提交少年法庭 的犯罪兒童或青少年