Choose have or has have has I _____ been translating this text since 2 o'clock. My sister ____ been helping mum for a long time. These boys ______ been watching the DVD for half an hour. We _____ been discussing it for an hour and a half. Our parents ____ been driving home for an hour. His friend ___ been waiting for him since 4. She _____ been walking for 2 hours. Our mum ___