Put the verbs in brackets into Past Perfect or Past Perfect Continuous 1. He ( walk) for an hour before he reached the cabin. 2. She was tired because she (not/sleep) the previous night. 3. Greg (look) for his book for two hours before he found it. 4. They were lost because they ( not/take) a map with them, 5. He (work) since morning on his computer and his eyes are red.
1. had been walking
2. had not slept
3. had been looking
4. hadn't taken
5. had been working