I suddenly remembered that I forgot I ... my keys.
had been forgotten
While Diana ... her favourite television programme, there was a power cut.
had been watching
Who ... the car at the time of the accident?
had been driving
had been going
5. David ... Japanese food before, so he knew what to order
had been eating
6. I ... some shopping yesterday, when I saw that Dutch friend of yours.
had been doing
7. What exactly ... you ... when I ... into your office yesterday?
was ... doing; had come
had ... been doing; came
were ... doing; had been coming
had ... done; came
had...been doing; had come
8. Laura ... the party because no-one ... her about it.
missed; had told
had missed; had told
had been missing; told
didn`t missed; had told
had missed; told
Keys: 1) had forgotten 5) had eaten
2) was watching 6) was doing
3) was driving 7) were...doing; came
4) had gone 8) missed; had told