问题

___________ should not be allowed to go out at night.
A:Twelve-years -old
B:Twelve-year-olds
C:Twelve years old
D:Twelve year olds
B:Twelve-year-olds
C:Twelve years old
D:Twelve year olds
正确答案是:
同类题型
How often does your sister use the Internet? —About _________.
Li Jun will have a math test tomorrow. As he isn’t good at math, he is ______.
name is Bob, is eleven years old.
Timmy often gets full marks in the exams, but he never shows off. He is very ______.
All the students are talking and laughing in the classroom and it’s _________.