1.When Bob arrived at the station, his friends … already … for him for half an hour.
haved…been waiting
have…been waiting
had…been waiting
were…been waiting
2.How long … you … in Moscow before you moved to St. Petersburg?
were…living
had…been living
had…lived
was…been living
3.We were very tired at the end of the trip. We ___ for ten hours.
had driven
has been driving
had been driving
4.I was glad to meet Ted again. I ___ him for ages.
not had seen
had been seeing
hadn’t seen
5.Sean explained why he ___ an essay.
hadn’t been written
hadn’t been writing
hadn’t written
6.Jack said he ___ tickets for the concert.
had been booking
had been booked
had booked
7.Andrew said he___ to China before.
had never been
had never being
hadn’t never been
8.There were puddles in the streets as it ___ all night.
had raining
had been raining
had rained
9.They ___ the same restaurant for years before they found a better one.
had visited
had been visit
had been visiting
10.My mom ___ dinner when I returned home.
had already cooked
had already cooking
had already been