Past Perfect, Past Perfet Continuous , Past Simple 6--12

isabel had sent...she made...she had been attending

17 they had run..paul used..

18 ..we got..heard..cancelled..

19 ...saw..had been doing.. was..

20 had been working..dropped..

6 It had been ....I realized...happened7 When Jack did not arrive...I had been known....he missed...8 When I met ...he had been working...9 We scarcely had started ....there was...10 We had been looking...we had signed it11 We had been been...son found...we had been looking...12 Nina had been thinking...she left