Choose the right variant. Write down the answer as shown in the example.

Example: 1a 2b 3c 4d

1. We __________ when somebody __________ on the door.

a. were talking / was knocking

b. had been talking / knocked

c. were talking / knocked

d. had been talking / had knocked



2. Ian ____________ at the factory long when he ___________ a manager.

a. was working / had been made

b. had been working / was made

c. had been working / made

d. had worked / made



3. Sally _________ for two years when she ___________ the race.

a. trained / entered

b. was training / was entering

c. had trained / had entered

d. had been training / entered



4. Jimmy ________ out of breath because he ___________.

a. had been / was running

b. was / was running

c. was / had been running

d. had been / had been running