Ответ: 1. Susana has lived in Germany for three month when she started going out with
Reiner. At that time he has trained to be a teacher and she met him at a
college disco. 2. When I have heard  about the motorway accident on the
radio, I immediately phoned my son to check that he has got back safely.
He has told me he was taking a different route home. 3. We have watched a
particulary romantic scene of a film at the cinema when my boyfriend’s
mobile phone gone off. He forgot to switch it off. 4. By the time
we have  got to the party they ate all the food. In fact, it was so late
that most of the guests  have already left and only two or three people were  still dancing.