Choose the correct verb form (Past Perfect Simple or Continuous).
1. The flat was dirty. They hadn't (cleaned/ been cleaning) it for weeks.
2. I was sad when I sold my car because I had (had/been having) it for a very long
time.
3. I knew all those facts because I had (read/ been reading) about it in the report.
4. My stomach ached because I had (eaten/been eating) too much at the party.
5. He was very nervous at the beginning of the match because he had never
(played/been playing) in the prime league before.
6. The roads were wet and dangerous because it had (rained/been raining) all night.
7. When I arrived at the party, Ann had already (left/been leaving).
8. We were good friends and we had (known/been knowing) each other for a long
time.
9. They had (walked/been walking) for five hours before they reached the village.
10. I had (felt/been feeling) sleepy all day so I had to drink a lot of coffee.​