3 Choose the correct option. 1 The rescuers had been trying/ had tried to get into the burning house when it collapsed. 2 Aliya wishes she hadn't been leaving / hadn't left the charity organisation. 3 I had been calling/had called all morning before I got through to the coordinator's office. 4 Some of the customers in my shop had been coming / had come for over 20 years. I miss them now that I have sold it. finding/had found this charity organisation by the time we even started 5 Dauren had been searching for it. 6 The firemen had never been seeing / had never seen such a bad accident. 7 Mukhtar Auezov had been writing / had written his first play by the age of 20. 8 By the time he retired​