Replace the italicised adverbial clauses of time by the appropriate form of the Participle using the model

Model:

увидев seeing (тогда)

когда увидел having seen (раньше)

1. When I entered the room, I felt some change in the atmosphere at once. 2. When we had finally reached the river, we decided to stay there and wait for the others. 3. When I reached out in the darkness, I felt a stone wall where I expected to find the door. 4. When she opened the parcel, she saw a large box of pencils. 5. When they had finally opened the safe, they found that most of the papers had gone. 6. When she closed the suitcase, she put it on the bed. 7. When she had closed and locked the suitcase, she rang for the porter to come and take it downstairs. 8. When she had cut the bread, she started to make the coffee.