Exercise 2. Use the Past Perfect Continuous Tense 1. She realized that she (to walk) for a long time.
2. He put down the flowers he (to hold) since he come.
3. We tried to pretend that we (to discuss) our plans.
4. Steven felt tired as he (sail) for several hours.
5. The boys (to play) football all morning.
6. They (wait) at the station for 90 minutes when the train finally arrived.
7. How long (learn / she) English before she went to London?
8. They were very tired in the evening because they (help) on the farm all day.
9. Sally (type) this text for 3 hours before Mark came.
10. How long you (watch) TV before you decided to go to bed?
11. Paul and Molly (talk) on the phone for an hour when the line broke.
12. They (to work) in a newspaper office since they returned.
