1) She had been doing her homework sincе an hour when she remembered to call her tutor.
2) We had been listening to music since afternoon and didn't pay attention to anything. 3) I remembered I hadn't cooked anything for dinner because I had been watching DVDs for a long time.
4) Amie had passed her test because she had been revising for two weeks.
5) He had been diving since August and felt quite experienced.
6) They hadn't been sleeping for some nights and looked quite exhausted.
7) His family had been having dinner for half an hour so there was nobody in the bedroom. 8) The policeman had been hiding in the thick bushes sinel last night and nobody could see him.
9) She had been dreaming of becoming an actress since she left school.
10) Historians and scientists had been conducting investigation fou three years.
2 Ask questions to your answers from Ex. 1 1) 2) 3) 4) 5) 6) 7) 8) 9) 10)

1) How long had she been doing her homework before she remembered to call her tutor? She had been doing her homework for an hour before she remembered to call her tutor. This means that she started doing her homework an hour ago and continued working on it until she remembered to call her tutor. 2) How long had they been listening to music before they realized they hadn't paid attention to anything? They had been listening to music since afternoon and didn't pay attention to anything. This implies that they started listening to music in the afternoon and continued doing so until they realized they hadn't paid attention to anything. 3) How long had she been watching DVDs before she remembered she hadn't cooked anything for dinner? She remembered she hadn't cooked anything for dinner because she had been watching DVDs for a long time. This suggests that she started watching DVDs a while ago and continued doing so until she remembered that she hadn't cooked anything for dinner. 4) How long had Amie been revising before she passed her test? Amie had passed her test because she had been revising for two weeks. This indicates that Amie started revising two weeks ago and continued studying until she took the test and passed it. 5) How long had he been diving before he felt quite experienced? He had been diving since August and felt quite experienced. This means that he started diving in August and continued diving until he felt quite experienced. 6) How long had they been not sleeping before they looked quite exhausted? They hadn't been sleeping for some nights and looked quite exhausted. This implies that they stopped sleeping at night for several nights and as a result, they looked tired and worn out. 7) How long had his family been having dinner before there was nobody in the bedroom? His family had been having dinner for half an hour, so there was nobody in the bedroom. This suggests that his family started having dinner half an hour ago, and during that time, they left the bedroom empty. 8) How long had the policeman been hiding before nobody could see him? The policeman had been hiding in the thick bushes since last night, and nobody could see him. This means that the policeman started hiding in the thick bushes last night and continued doing so until the present moment, staying unnoticed. 9) How long had she been dreaming of becoming an actress after she left school? She had been dreaming of becoming an actress since she left school. This implies that she started dreaming of becoming an actress when she left school and has continued dreaming about it up until now. 10) How long had historians and scientists been conducting investigation before completing it? Historians and scientists had been conducting an investigation for three years. This indicates that they started the investigation three years ago and continued working on it until they completed it.