Practise the Past Perfect Continuous Tense according to the model.

Model 1: He was short of breath because {run all the way)
He was short of breath because he had been running all the way.

1. His hands were dirty (work in the garden). 2. She passed all her examinations very well (study hard throughout the term). 3. He was behind the class (not study properly). 4. Her eyes were red (cry). 5. She got used to his strange ways (live together for a long time). 6. She looked half asleep (rest).

Model 2: They drove for three hours. Then they stopped for lunch.
After they had been driving for three hours, they stopped for lunch.

1. We walked for an hour. Then we understood that we had taken the wrong road. 2. He waited for her for half an hour. Then he went away. 3. He worked at the laboratory for five years. Then he changed his job. 4. I thought the matter over for quite some time. Then I took a decision. 5. He looked through the latest newspapers and magazines for some time. Then he sat down to his report. 6. She watched the television late into the night. Then she could not sleep.