Relier Pairs IV LEVEL UNIT 4 CHALLENGES Lesson 2Version en ligne Reinforce questions and proper answers. par Martha Uribe 1 Why hadn´t he called for help? 2 Why hadn´t anyone come to look for him? 3 How long had he waited in the canyon ? 4 What had he been doing when he met the hikers ? 5 What had Aron been doing when the accident happend ? 6 What had he done to get away ? He had cut his arm off. Because he hadn´t told anyone where he was going. He had been walking out of the canyon. He had been climbing in a remote canyon. Because he hadn´t brought his cell phone with him. He had waited in the canyon for five days.