Răspuns:
1. They had been in the youth club for three hours.
2. Joanne and I have been good friends since primary school
3. She had been playing in the volleyball team for two months.
4. I should see a doctor. I had been sick for a week.
5. I haven't heard a lot from Sandra since last October.
Explicație:
For indică o perioadă de timp si se poate folosi cu toate timpurile verbale.
Since indică începerea unei acţiuni în trecut, care mai continuă şi în prezent; se foloseşte doar cu timpurile perfecte ( Present Perfect Simple and Continuous, Past Perfect Simple and Continuous s.a.)
Sper ca te-am ajutat! <3
