Раскройте скобки, употребляя глаголы в past simple, past continuous и past perfect. 1.i (to sit) in an armchair and (to think) of rny coming trip across the north sea when the door suddenly (to open) and old friend of mine whom i (not to see) for a very long time (to enter) the room.

I was sitting in an armchair and thinking of rny coming trip across the North Sea when the door suddenly opened and old friend of mine whom I had not seen for a very long time entered the room.