英语:用can和can't造8个家规或校规(4个can,4个can't)

 You  can  take  exercise   in the school  gym .

You  can borrow books from the  school  library .

You  can   join the   Student's Union  .

You can  use the lab  to conduct experimemts  .

You can't  speak   loudly in the library

You  can't  bring  cellphones  to  school .

You can't  enter  the  teachers' office  without permission .

You can't  take the magazines  out of the reading room .