If the school (ban) mobiles, pupils (concentr
better in lessons.
2 There (not be) so much crime in the school if
pupils (not take) mobiles to school.
3 If pupils (not have) mobiles with them, their
parents (worry) about them more.
4 If the school (ban) mobiles, a lot of pupils (break)
the rules.
5 Life (be) easier for teachers if there (not be) any
mobiles in school.
