Помогите с английским 7клас

For указывает на продолжительность действия, в то время как since - это некая точка отсчета, например: I've known her since 2021 (я знаю ее начиная с 2021 года, мы познакомились в 2021 году)

1) for an hour (в течение часа)
2) since afternoon (начиная с полудня)
3) for a long time
4) for two weeks
5) since August (с августа)
6) for some nights
7) for half an hour
8) since last night
9) since she left school (с тех пор, как она закончила школу)
10) for 3 years (в продолжение трех лет)

Пардон, не заметила вторую часть, ловите вопросы:

1) How long had she been doing her homework before she remembered to call her tutor?
2) How long had you been listening to music?
3) Why hadn't you cooked anything for dinner?
4) How long had Amie been revising before she passed her test?
5) Since when had he been diving?
6) How long hadn't they been sleeping?
7) How long had his family been having dinner?
8) Since when had the policeman been hiding in the bushes?
9) Since when had she been dreaming of becoming an actress?
10) How long had historians and scientists been conducting investigations?