Ask questions to the sentences in Exercise 1.

1) How long had she been doing her homework before she called her tutor? 2) What had they been listening to since the afternoon? 3) Why hadn't you cooked dinner for a long time? 4) How long had Amie been revising before she passed her test? 5) How long had he been diving to feel experienced? 6) Why had they been sleeping for several nights? 7) How long had his family been having dinner before he noticed there was nobody? 8) Where had the policeman been hiding since last night? 9) When had she been dreaming of becoming an actress since she left school? 10) How long had historians and scientists been conducting research before the new discovery?