境内的含义，主要有两层，即（）。 A.属地 B.属人 C.时间 D.前提

1. Three-year-olds is too young to dress themselves.
2. The boy is not enough old to be a volunteer.
3. You can’t allowed to go boating today.
4. The teachers come from England. So are the students.
5. I’m not allowed to go out on school nights too.