Solution:
- George Blake and Stanley Wilson, 'were travelling' (travel) through a forest. The sun was shining 2 and it was very hot.
- After some time they stopped 3 because they were tired. They were sleeping 4 George heard 5 a strange sound.
- A beautiful bird, a bird of paradise! It was singing 6 and another bird was watching 7.
- George was drawing 8 the birds when Stanley woke up 9. 'What's that noise?' he shouted. The birds were scared away. George wasn't happy!
Answer: 1. were travelling, 2. was shining, 3. stopped, 4. were sleeping, 5. heard, 6. was singing, 7. was watching, 8. was drawing, 9. woke up.