Ответ:
1. off
2. to
3. on
4. to
5. to
6. on
проверьте please! просто скопируйте предложения с этими предлогами в переводчик для точного ответа
See the attached file please
1. BBC1, BBC2,ITV , Channel 4, Channel 5
2. The BBC was founded in 1936
3. There are four main channels and one non-core channel in Britain at present. So, there are five channels in Britain at present.
4. Commercial and independent
If he doesn't come home soon