_________shouldnotbeallowedtogooutatnight. A.Twelve-yea...

问题详情：

_________ should not be allowed to go out at night.

  A. Twelve-years-old               B. Twelve-year-olds

C. Twelve year old                 D. Twelve years olds

【回答】

B

知识点：构词法

题型：选择题