Do you think should be allowed to drive?A. sixteen-year-oldB. seventeen-year-oldsC. fifte

问题补充：

Do you think should be allowed to drive?

A. sixteen-year-old

B. seventeen-year-olds

C. fifteen-year-old

D. eighteen-years-olds

答案：

A. sixteen-year-old

(答案→)B. seventeen-year-olds

C. fifteen-year-old

D. eighteen-years-olds

解析：本题考查的是数词-名词单数-adj，相当于名词用，表示这一类人，故选本题选用B，表示17岁的小孩，这一类人，因此后加s，故选B