"brown wolf" почему она убегала на север?

the mobile phones in pupil's hands is a new problem of a teacher in a modern school. the using of phone has negative and positive sides. let's discuss them.

first of all, the call of telephone draws not only a owner of a phone but all pupils from a lesson.

secondly, there are a lot of conflicts because of a phone. f.e. pupils download bad videos to the internet.

from the other hand, we can use it for studying - the search of information in th internet, a   dictionary, a calculator. also relatives can call thier child at every moment.

i think that we can use a mobile phone but only in the wriht way.

1. while we were walking in the park, it began to rain. 2. i was playing computer games at 5 o'clock yesterday. 3. i played computer games yesterday. 4. i wasn't sleeping at 5 o'clock yesterday. 5. what did he do yesterday? he read a book. 6. my brother didn't play tennis yesterday. 7. my sister wasn't playing piano at 6 o'clock yesterday. 8. she was playing piano all evening yesterday. 9. when i entered the kitchen, my mother was cooking. 10. why was she sleeping from 5 till 6 o'clock yesterday.