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