Перепишите следующие предложения и переведите их на русский язык, обращая внимание на значение глагола "to have":

Джоник в категроии Английский язык, вопрос открыт 30.06.2018 в 17:11

1. TV stations have to transmit a total of 1,500 hours a day.
2. Space television has a great future.
3. The scientist has begun working at the problem.
4. She had breakfast before she left home.
5. Many difficulties have been overcome by researchers.