5 Rewrite the notice using the passive.

Someone left a tablet in the cafeteria this lunchtime. Another student found it and he gave it to a teacher. We asked the owner to come to the reception area to collect it. Students lost a lot of personal devices last year. We didn't return several of these to their owners, because we didn't find the owners. We remind you to be careful with your tablets, laptops and smartphones.

A tablet was left in the cafeteria this lunchtime. It was found by another student and was given to a teacher. The owner was asked to come to the reception area to collect it. A lot of personal devices were lost by students last year. Several of these were not returned to their owners because they were not found. You are reminded to be careful with your tablets, laptops and smartphones.