The Saiga antelope is critically? Ex2 page 16

Iremember when i 1)  went  (go) on holiday abroad for the first time.  i 2)  had just left  (just/leave) school.  i 3)  studied  (study) very hard for my final exams and i 4)   felt  (feel) that i needed to get away.  a friend of mine 5)  wanted  (want) to go away as well so we 6)  decided  (decide) to look some brochures at a travel agent's.  we 7)  had searched/had been searching  (search) for about an hour when my friend 8)  found  (find) the perfect holiday - two weeks in cuba.  we 9)  were  (be) very excited about it.  finally the day of our holiday 10)  arrived  (arrive).  we 11)  had just left  (just/leave) the house when the phone 12)   rang  (ring).  i 13)   ran  (run) back into the house, but the phone 14)  had stopped  (stop) by the time i 15)  reached  (reach) it. when we 16)  got  (get) at the airport, we 17)  checked  (check)  in  and18)  went  (go) to the cafeteria.  while we were having our coffee, the airline 19)  made  (make) an announcement.  our flight was delayed for eight hours. it was then that i 20)  realised  (realise) what the phone call was about.