Задание B
1. B
2.B
3.B
4.A
5.A(не уверен)
6.A
7.B
Задание C
1. we just heard the news when you bring
2. i already thought that before you suggested it
3. when i turned on tv the programme already started
4. she was hungry because she not ate anything all day
5. by the time i left school i decided to become a musician
как то так, не уверен что здесь прям всё правильно