Electric train derails
Four people were injured when an electric train 1) derailed/was derailing/had derailed/had been derailing last Friday evening. The train 2) travelled/was travelling/had travelled/had been traveling near Gdynia and 3) carried/was carrying/had carried/had been carrying100 passengers at the time of the accident. At around 7:15 local time, while the train 4) /came/was coming/had come/had been coming around a sharp curve, three carriages 5) came/was coming/had come/had been coming off the tracks. According to eyewitness reports, passengers 6) heard/was hearing/had heard/had been hearing a violent explosion just before the train 7) derailed/was derailing/had derailed/had been derailing. Teams of emergency workers 8) arrived/were arriving/had arrived/had been arriving at the scene and 9) began/were beginning/had begun/had been beginning to pull out passengers 10) trapped/were trapping/had trapped/had been trapping inside the carriages. The cause of the derailment is under investigation. Authorities 11) confirmed/were confirming/had confirmed/had been coming that a railway crew 12) worked/was working/had worked/had been working on the tracks for several hours before the accident 13) happened/was happening/had happened/ had been happening.
see the attached file
Объяснение: